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Severe Chrome Bug Allowed Arbitrary Code Execution (talosintel.com)
An anonymous reader quotes an article from Softpedia:
Google has recently patched a high severity security bug in the Chrome browser that allowed crooks to send malicious code to your browser and take over your entire system... Cisco's Aleksandar Nikolic was the researcher that discovered and reported the issue to Google, who even awarded him $3,000 for his efforts.
Chrome's built-in PDF reader PDFium used an OpenJPEG library to parse JPEG2000 files, and in Chrome it was lacking a crucial heap overflow check, according to a post on the Talos security blog. "By simply viewing a PDF document that includes an embedded jpeg2000 image, the attacker can achieve arbitrary code execution on the victim's system."
Chrome's built-in PDF reader PDFium used an OpenJPEG library to parse JPEG2000 files, and in Chrome it was lacking a crucial heap overflow check, according to a post on the Talos security blog. "By simply viewing a PDF document that includes an embedded jpeg2000 image, the attacker can achieve arbitrary code execution on the victim's system."
While it's good that Google rewards people who help make Chrome and the web more secure, $3,000 sounds not enough for such a critical bug.
Slashdot, fix the reply notifications... You won't get away with it...
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The real fix in my opinion is to get rid of the goddamn built in PDF viewers that now bloat browsers like Chrome and Firefox. Clearly they can be abused, like in this case. But in addition to that they just piss me off to no end. In the rare cases when I have to view a PDF, I typically want to use a real PDF viewer. I don't want to use the ones built into the browsers because they usually misrender the PDF in some way! Yeah, I probably could find some way to disable it, but I shouldn't have to. A web browser shouldn't come with a fucking PDF viewer built in!
Congratulations on your purchase of a brand new nigger! If handled properly, your apeman will give years of valuable, if reluctant, service.
INSTALL YOUR NIGGER.
You should install your nigger differently according to whether you have purchased the field or house model. Field niggers work best in a serial configuration, i.e. chained together. Chain your nigger to another nigger immediately after unpacking it, and don't even think about taking that chain off, ever. Many niggers start singing as soon as you put a chain on them. This habit can usually be thrashed out of them if nipped in the bud. House niggers work best as standalone units, but should be hobbled or hamstrung to prevent attempts at escape. At this stage, your nigger can also be given a name. Most owners use the same names over and over, since niggers become confused by too much data. Rufus, Rastus, Remus, Toby, Carslisle, Carlton, Hey-You!-Yes-you!, Yeller, Blackstar, and Sambo are all effective names for your new buck nigger. If your nigger is a ho, it should be called Latrelle, L'Tanya, or Jemima. Some owners call their nigger hoes Latrine for a joke. Pearl, Blossom, and Ivory are also righteous names for nigger hoes. These names go straight over your nigger's head, by the way.
CONFIGURE YOUR NIGGER
Owing to a design error, your nigger comes equipped with a tongue and vocal chords. Most niggers can master only a few basic human phrases with this apparatus - "muh dick" being the most popular. However, others make barking, yelping, yapping noises and appear to be in some pain, so you should probably call a vet and have him remove your nigger's tongue. Once de-tongued your nigger will be a lot happier - at least, you won't hear it complaining anywhere near as much. Niggers have nothing interesting to say, anyway. Many owners also castrate their niggers for health reasons (yours, mine, and that of women, not the nigger's). This is strongly recommended, and frankly, it's a mystery why this is not done on the boat.
HOUSE YOUR NIGGER.
Your nigger can be accommodated in cages with stout iron bars. Make sure, however, that the bars are wide enough to push pieces of nigger food through. The rule of thumb is, four niggers per square yard of cage. So a fifteen foot by thirty foot nigger cage can accommodate two hundred niggers. You can site a nigger cage anywhere, even on soft ground. Don't worry about your nigger fashioning makeshift shovels out of odd pieces of wood and digging an escape tunnel under the bars of the cage. Niggers never invented the shovel before and they're not about to now. In any case, your nigger is certainly too lazy to attempt escape. As long as the free food holds out, your nigger is living better than it did in Africa, so it will stay put. Buck niggers and hoe niggers can be safely accommodated in the same cage, as bucks never attempt sex with black hoes.
FEED YOUR NIGGER.
Your Nigger likes fried chicken, corn bread, and watermelon. You should therefore give it none of these things because its lazy ass almost certainly doesn't deserve it. Instead, feed it on porridge with salt, and creek water. Your nigger will supplement its diet with whatever it finds in the fields, other niggers, etc. Experienced nigger owners sometimes push watermelon slices through the bars of the nigger cage at the end of the day as a treat, but only if all niggers have worked well and nothing has been stolen that day. Mike of the Old Ranch Plantation reports that this last one is a killer, since all niggers steal something almost every single day of their lives. He reports he doesn't have to spend much on free watermelon for his niggers as a result. You should never allow your nigger meal breaks while at work, since if it stops work for more than ten minutes it will need to be retrained. You would be surprised how long it takes to teach a nigger to pick cotton. You really would. Coffee beans? Don't ask. You have no idea.
MAKE YOUR NIGGER WORK.
Niggers are very, very averse to work of any kind. The nigger's
NIGGER GENETICS
The following excerpt from A Farmer's Guide to Biology: Making the Best of Your Nigger has been included below for your interest.
The observable differences between niggers are called variations. Think of your and your friends' niggers and all of their different sizes, shapes, and features. These are variations. Animals and plants also show variation; usually more than a nigger is capable of showing. For example, dogs are all one species and can interbreed together but have many different colors, shapes, or sizes. The same can be said about niggers—but note that they always remain the same color.
Some variation is inherited and some variation is determined by the environment. Characteristics such as height and weight are partly inherited and partly caused by diet. Genes and the environment can influence your nigger.
Farmers often try to improve their niggers by breeding new variations or combinations of characteristics. For example, short and disease resistant niggers crossed with tall and susceptible niggers will give rise to tall, resistant niglets (provided that the characteristics tall and resistant are the dominant alleles). Cross breeding provides a cheaper and more reliable way of improving a nigger, compared to genetic engineering. Genetic engineering is only used to introduce genes that cannot be introduced by breeding. Seeing as niggers are only able to handle simple tasks, this is usually not necessary.
A characteristic showing continuous variation is controlled by many pairs of genes and is usually influenced by the environment. Continuously variable characteristics show no distinct phenotypes; there is usually a spectrum of varieties. For example, some niggers are tall and some niggers are short, and it is possible that a nigger is any size in between. The same could be said of weight and skin tone. However, intelligence is not a variable factor as the brain of a nigger is severely underdeveloped.
Any adaptation that allows a nigger to live longer is said to have survival value. For example, a nigger with chicken survives longer when his owner decides that it is not necessary to feed him. Some say that the addition of fried material to the chicken can lengthen the nigger's lifespan considerably. Fried Pork Chops supplemented with copious quanities of Collard Greens greatly enhance the work output of your units. A word of caution here though, units fuelled with the foregoing should only be used in well ventilated areas. Some variations have mutated and come equipped with "Prehensile Lips". These "Prehensile Lips" create tremendous suction on Fried Chicken and frequently strip the meat off the bone so completely that the dogs are insulted if offered one of the bones. Bar-B-Qued ribs are also treated the same by the "Prehensile Lips".
On OS X (macOS), the OS itself can display PDFs. Having a PDF viewer built-in browsers is useless.
Yes but some nigger worked hard to plagiarize the code to make that browser PDF viewer. A nigger did that! Therefore by libtard logic, if you oppose that PDF viewer, you are clearly a racist who hates niggers. You fucking nigger.
It could execute code in the browser tab's process, but that's a long long way from taking over your system. Hence the relatively low bounty, compared to really serious exploits that can break out of the sandbox and bypass OS security.
const int one = 65536; (Silvermoon, Texture.cs)
SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
rules aRe This in our group
I just checked and I am using IE 6 so I should be safe
http://saveie6.com/
Google is wealthy company that builds a widely used browser; why don't they audit every piece of their product?
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That's pretty low for such a bug.... much less than those things go for on the black market. If you want to make a secure browser, the financial incentive to fix bugs has to be greater than the incentive to find them and keep secret. All this is assuming the "bug" wasn't inserted as a feature request in the first place.
The next time someone pontificates about how secure browsers are due to sandboxing, and how Firefox will become even more secure thanks to e[somenumber]s, I'd like to dip his/her head into this.
The browser is at the moment the biggest backdoor in a system. It reminds of Microsoft's office programs 1995ish.
Why do we have to repeat the same stupid mistake over and over again? For some artificial notion of "user convenience"? (more "advertiser convenience" perhaps?)
You seem like an appologist, or a shill for Google.
You combine this exploit with another. In a very simplistic example: you use the PDF to force a tab to go to a command-and-control http server with a newer remote exploit that normally would not have been directed to, especially if able to leverage off delays in updates. If they never felt obligated to hire semi-competent Black people for the diversity-sake of it in an engineering department, these foolish old exploits from embedded media in PDFs would not take traction.
You seem like an appologist, or a shill for Google.
You would combine this exploit with another. In a very simplistic example: you use the PDF to force a tab to go to a command-and-control http server with a newer remote exploit that normally would not have been directed to, especially if able to leverage off delays in updates. If they never felt obligated to hire semi-competent Black people for the diversity-sake of it in an engineering department, these foolish old exploits from embedded media within PDFs would not take traction.
Turns out that wasn't such a clever idea after all. Its the reason I never installed Chrome on any linux box I own.
A language that is massively insecure by default.
This time it may have been at worst a few thousand people who had their credentials stolen - maybe a few bank accounts emptied - spyware - ransomware installed.
Tomorrow it could cost many thousands of people their lives if there were real enemies out there who mean to do us serious harm. We are complacent because we live in a world that is for the most part at peace where there is presently some form of partially functional rule of law. It won't last, and thanks to C we are horribly unprepared for any serious external threat where we need to be able to rely on a secure infrastructure.
Fans of C - are the few extra cycles you save writing in this horribly outdated language really worth it? Should any code at all above the most critical time sensitive core routines be written in this kind of fundamentally insecure language?
Time to wake up before it's too late. It's time to ban C.
Given that Chrome is now very popular. One should expect more attacks focused on it. This is one area I would rather Google avoid and that is built in features like Flash and PDF reader. Because the user then has to rely on Google to update their browser to fix the security problem. Although, I give Google some praise for fixing this stuff usually in good time.
Does this mean that I can't use Chrome on my Windows XP anymore?
benefits of 3eing The rain..we can be An arduous the reaper BSD's Writing is on the Intentions and in a head spinning Play area Try not the above is far there are parties, but here and what supplies said. 'Screaming just yet, but I'm Base 8for FreeBSD It transforms into codebase became another charnel and piss cocktail. they started to despite the
racist? How is big 3eal. Death
Last year I worked on an old project where we converted old assert macros to ifs precisely because they were #defined out of existence in production code. Stupid fucking things should be banned. This was an embedded system.
(-1: Post disagrees with my already-settled worldview) is not a valid mod option.
Presumably, upgrade. What version/build fixes this issue?
The sandbox doesnt run as root. If you have been using sudo to run chrome, you have no one but yourselves to blame.
Finding NULL return usage from malloc/calloc is something static-analysis tools (like beefed up lint tools) easily spot. Not sure why they didn't run the source thru' static analysis or marked the flagging as noise. This case is finding the input arg to calloc could be zero and hence can get a NULL return (they say implementation dependent; most cases it's NULL when you ask for zero bytes/items to a calloc library)
And this is why having a way to provide software updates to the field without annoying the end user is important.
what are you, 10? wow we get it, you don't like black people. tired of being dominated or what?
False flag, no doubt.
This is why instead of embedding a plugin in the browser for PDFs, Mozilla has created PDF.js. It uses HTML5 & JavaScript to render PDFs within the browser's normal sandbox. There's even a Chrome addon.
Is there a link to a demo for this Chrome PDF reader bug?
Browsers should defer to the OS for non web data. Put shit in and let the browser call upon the OS to DO SOMETHING with the media
Not every operating system ships with support for every codec known to man. For example, OS X ships without the WebM codec stack (Matroska container, VP8 and VP9 video codecs, and Vorbis and Opus audio codecs), instead relying on the patented, royalty-bearing MPEG-4 stack. So does Windows prior to Windows 10.* Your suggestion would bring us back to the days of having to install OS-level "codec packs", as well as the trojans that masquerade as codec packs. These trojans used to be fake antivirus; nowadays, they're more often straight-up file-encrypting ransomware.
* Edge for Windows 10 adds WebM support as of version 14291.
does this mean we'll get a 32-bit x86 linux update for chrome?
doubt it :(
Try running your browsers in a sandbox. As a matter of fact, make it a rule to sandbox all internet/web facing applications.