Jwz, the great God of programmers, and Linux Mint: a "battle of words" caused by a bug that hasn't been fixed for 17 years

InfoQ 2021-01-24 13:59:07
jwz great god programmers linux


{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Two bear children , It triggered a “ The saliva ” War ."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" When two children are playing on their father's computer , Inadvertently found a way to bypass Linux The screen saver program and the way to lock the system . It's a loophole , It may allow malicious attackers to bypass the screen saver and password of the operating system , Access the desktop that should be locked ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" A nickname robo2bobo User in GitHub Upper bug The report said ,“ A few weeks ago , The children are going to visit my Linux desktop . And I'm standing right behind them , Watching them press and shoot everywhere .” Two children press random keys on the physical and soft keyboards at the same time , Eventually lead to Linux Mint The screen saver crashed 、 They have direct access to the desktop ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" The programmer's father was surprised , So he asked the children to try again , I didn't expect to succeed ,“ I thought it was just an accident , But then the kids came back with the problem .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" In the evening , He arrived at Linux Mint Of GitHub This is reflected on the page bug. What I didn't expect was , Immediately other netizens said that in the same desktop environment ,“ His children ” The same thing happened …"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Linux Mint Lead developer Clement Lefebvre After some research , Express :“ This is a high priority error , It needs to be repaired as soon as possible .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"Bug source :OSK Upper Ē key "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" In the beginning , Developers spent more than a day , I want to reproduce the problem , But it's not that easy :“ Since yesterday , We've never been able to recreate the collapse here .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/wechat\/images\/c4\/c4473923ce96d57f2319cfc88687ccdd.gif","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","text":" Netizens imagine how developers try to reproduce errors "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" according to Clement Introduction to , The problem is ultimately attributed to libcaribou, namely Linux Mint Desktop interface used in Cinnamon The accompanying soft keyboard (OSK) Components . In particular , When the user presses... On the soft keyboard “ē” Key time , this bug It will be triggered ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" in the majority of cases , This bug It should lead to Cinnamon Desktop process crash ; But if you open the soft keyboard in the screen saver program , be bug Will cause the screen saver to crash , So users can access the underlying desktop ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Lefebvre Express , last year 10 month Linux Mint The system has started to repair CVE-2020-25712 Loophole , But inadvertently introduced this new bug. From then on , All use Cinnamon 4.2 And later versions of Linux Mint Distributions will be affected by this bypass attack . This is because from Cinnamon 4.2 rise , The system starts to add the soft keyboard function to the screen saver ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":" Programmer God JWZ:I TOLD YOU!"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" About this bug The discussion of the , It's Jamie · Zawinski (Jamie Zawinski), In this regard, he published a special article , It means that he 17 I warned about it years ago Cinnamon and GNOME official :"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"“ If not in Linux Up operation XScreenSaver, So your screen is not locked .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/wechat\/images\/f3\/f3a0c60b68f481785e96097b0013eb42.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","text":" The article is accompanied by a paragraph of blinding “I TOLD YOU” video "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Born in 1968 Jamie of the year · Zawinski , The English abbreviation is JWZ, yes 《 The matrix 》 in MATRIX The designer of the matrix ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" He was also Netscape The main designer of the browser , Born in Pittsburgh , I didn't graduate from high school , Already a gifted programmer ,15 I started at Carnegie Mellon University at the age of Lisp Research and development .90 s , He went to California , Join the famous Netscape :“ You've heard of it before Netscape Before , I've been in charge of developing Netscape Navigator 1.1 Of UNIX Version of the .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"2004 year ,JWZ For the first time, he was warned that he met Linux Mint A loophole in the , And then every few years ,JWZ It's like this bug. Every time , I make complaints about it once ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"CVE-2019-3010, from Oracle Solaris Screen savers get special rights to upgrade ;"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"CVE-2014-1949, MDVSA-2015:162: stay Cinnamon Press the menu key in the screen saver , Press again ESC key , You can go in shell;"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Press and hold the down key , Unlock Cinnamon Screen saver ;"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Press and hold enter , Unlock GNOME Screen saver ."}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"JWZ say , As early as 17 Years ago , He even mentioned exactly the collapse bug, To explain “ If you don't follow the design idea , What's going to happen ”, But every time Linux Mint They all replied that “ It has been fixed ”."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"JWZ Think ,“ Bad security is worse than no security ”, Because of the present Linux The foundation of graphical interface X11 There are serious problems that cannot be fixed : Locking and authentication are operating system level issues ;X11 This mistake in architecture can never be fixed ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" In the end, I said :“ I'm very concerned about how they're going to solve this problem .”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"Linux Mint Counterattack : You can go on , other BB!"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" although Linux Mint The patch was released on Wednesday , It can solve this problem bug And effectively prevent potential collapse , but JWZ What was said , I'm angry Lefebvre 了 ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/wechat\/images\/5f\/5f60b564411b3f615475b8dcd592faf8.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" It's not too big to watch the excitement , Before, I specially JWZ My blog address has been sent to GitHub Of bug Next report , also at The relevant maintenance personnel ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Lefebvre stay GitHub Response on the page JWZ:“ There's no point in writing an article full of sarcasm . I suggest you turn your mouth into action … I hope that you can really participate in the work of 6 Write an email in six months , Tell us ‘ There are still problems , The reason is that 、 Two 、 3、 ... and ……’, Or directly design a beautiful and easy to use 、 Safe and stable locker.”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"size","attrs":{"size":12}},{"type":"strong"}],"text":" And then refuted one by one JWZ Criticism :"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" As early as 2004 year , That is to say 17 Years ago , I've explained in the documentation that I'm in XScreenSaver Design trade-offs made in . I even mentioned the crash exactly bug, To explain “ If you don't follow the design idea , What's going to happen ”."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" my dear friend , Let others value your opinion , We need to be more pragmatic . It's like me 17 I reminded you years ago “ Don't go out , There could be a car accident .” It's time for something to happen , And tell my friends at the funeral “ I already told him .” The problem is , Does that make sense ? It's time to go out , It's time to get on the highway or , Life is not that safe . Users just want a beautiful screen saver , We are also trying to meet your requirements . Here, please JWZ Man, think about it , How difficult is it to combine security and richness in design . We should have thought about it in our design ? Yes , Anyone can say beautiful things . The point is , At that time, our goal was to provide users with beautiful screen savers , I don't care so much ?"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Even if it is light-locker And KDE In itself , It's more effective than JWZ My idea is more reliable , At least while meeting the security requirements , It provides a solution to the user's needs . We initially released light-locker when , There's no such problem . Because most of us used gnome-scrensaver And mate-screensaver replace xscreensaver. let me put it another way , We accepted xscreensaver The fact that there are security flaws , And publish light-locker I almost forgot about it when I was young . unfortunately ,bug So it's preserved ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" And writing cinnamon-screensaver when , It was meant to replace gnome Screen saver . It is a pity that , We still haven't thought of repairing it bug. After all, at that time we even light-locker I didn't even think about it , What's more, is xscreensaver Well . So , That's what caused the problem this time ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" In fact, there will always be such problems , Over and over again ."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" That's the reality , Accept it or not , That's the reality .JWZ I don't seem to understand that —— You can't ban people from doing what they want to do , For example, they are not allowed to cross the road for safety reasons . Even if someone is always reminding , Besides upsetting them , It won't help traffic safety in any way ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" Every time bug appear , They all replied that “ It's really a bug, But they've fixed it ”. It's not right , The problem is that it shouldn't be a bug. The real reason is the design of the system . The person who designed the security architecture of the system , There should be no way to make safety ineffective . This is not reasonable ."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" You can see ,GNOME The team has rewritten the project from scratch ( I'm not sure what design they used in the rewrite phase ), We have similar plans . you 're right , We have made the mistakes that our predecessors have made , In the end, the problem hit us in the head . But it's really boring to be stuck in the past , The most important thing is how to avoid the problem again . We decided to separate the welcome program from the lock program on the development roadmap , This will be in 5.0 It is reflected in the version ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" It's easy to catch people's eyes with the most sarcastic blog posts , It also makes us aware of the problem . But our focus should always be on the code itself ( It's not just gnome-screensaver Or other published upstream code , It's the code in the whole project ), When there is a problem, audit it , That's how the project developed ?"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"JWZ Despite the questions raised , But no solution is given . Personally , I think both at the security level and the functional level ,light-locker And KDE It should be the best option at present ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" For a variety of reasons , This bug It will appear in other screen saver lock programs . It's very difficult to write secure code , Most developers can't do it at all . Locking and authentication are both operating system level issues .X11 This problem in architecture can never be fixed . I have to admit it. , these bug It is worthy of great attention —— Because security is worse than no security ."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" I agree with the above ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" More irritating , It's about development XScreenSaver Lock screen programs are no fun . I'm not interested at all , This function is only added to meet the needs of users ."}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" In fact, most of my friends are like me , I don't want to participate in the security work myself . As a developer , Who doesn't want to do something cool ? And security is actually binding itself , One by one, we'll find out what's missing and fill in what's missing , Prevent malicious people from damaging the whole system . It's important , But no fun ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" alas ……"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"XScreenSaver It's a great project , Help users to solve the real needs . As its fork Of gnome-screensaver Is the same , Over the years, it has always served the user community . So although some security risks have been exposed , But project developers have clearly explained why they make such choices and tradeoffs . So I don't think it's necessary to complain —— Problems found , Just solve the problem . We're going to go a step further .JWZ For us, the feedback from the government is equivalent to a reverse push , It also strengthened us “ If not necessary , Do not add entities. ” The basic development concept of ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":" But I still want to JWZ Brother said , Beautiful words alone can't solve practical problems . The best way , That is, we work together to build the safest road . Yes , Don't complain 、 Don't always stress something “ I said earlier ”, Add to the code audit 、 Add to the function development , Be a problem solver ."}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":" Extended reading :"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https:\/\/www.jwz.org\/blog\/2021\/01\/i-told-you-so-2021-edition\/","title":"","type":null},"content":[{"type":"text","text":"https:\/\/www.jwz.org\/blog\/2021\/01\/i-told-you-so-2021-edition\/"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https:\/\/github.com\/linuxmint\/cinnamon-screensaver\/issues\/354","title":"","type":null},"content":[{"type":"text","text":"https:\/\/github.com\/linuxmint\/cinnamon-screensaver\/issues\/354"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}
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