Race condition in mm/gup.c in the Linux kernel 2.x up to and including 4.x prior to 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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canonical ubuntu linux 12.04 |
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canonical ubuntu core 15.04 |
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canonical ubuntu linux 16.04 |
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linux linux kernel |
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redhat enterprise linux long life 5.6 |
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redhat enterprise linux eus 6.7 |
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redhat enterprise linux eus 6.6 |
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redhat enterprise linux 6.0 |
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redhat enterprise linux 7.0 |
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redhat enterprise linux aus 6.2 |
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redhat enterprise linux 5 |
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redhat enterprise linux eus 7.1 |
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redhat enterprise linux aus 6.4 |
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redhat enterprise linux long life 5.9 |
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redhat enterprise linux tus 6.5 |
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redhat enterprise linux aus 6.5 |
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debian debian linux 7.0 |
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debian debian linux 8.0 |
The “Dirty Pipe” Linux kernel flaw – a high-severity vulnerability in all major distros that grants root access to unprivileged users who have local access – affects most of QNAP’s network-attached storage (NAS) appliances, the Taiwanese manufacturer warned on Monday.
Dirty Pipe, a recently reported local privilege-escalation vulnerability, affects the Linux kernel on QNAP NAS running QTS 5.0.x and QuTS hero h5.0.x, QNAP advised. If exploited, an unprivileged, local user can gain...
A new Linux vulnerability known as 'Dirty Pipe' allows local users to gain root privileges through publicly available exploits.
Today, security researcher Max Kellermann responsibly disclosed the 'Dirty Pipe' vulnerability and stated that it affects Linux Kernel 5.8 and later versions, even on Android devices.
The vulnerability is tracked as CVE-2022-0847 and allows a non-privileged user to inject and overwrite data in read-only files, including SUID processes that run as root.
...
These statistics are based on detection verdicts of Kaspersky products received from users who consented to provide statistical data.
In 2019, Kaspersky mobile products and technologies detected:
In summing up 2019, two trends in particular stick out:
This report discusses each in more detail below, with examples and statistics.
Over the past year, the number of attacks on the personal data of mobile device users increased by half: from 40,386 unique users in 2018 to 67,5...
For just under two years, the Global Research and Analysis Team (GReAT) at Kaspersky Lab has been publishing quarterly summaries of advanced persistent threat (APT) activity. The summaries are based on our threat intelligence research and provide a representative snapshot of what we have published and discussed in greater detail in our private APT reports. They aim to highlight the significant events and findings that we feel people should be aware of.
This is our latest installment, focus...
Cisco Systems revealed in a security bulletin Wednesday that it “inadvertently” shipped in-house exploit code that was used in security tests of scripts as part of its TelePresence Video Communication Server and Expressway Series software. The code exploits the Dirty Cow vulnerability (CVE-2016-5195), a well-known privilege escalation vulnerability in the Linux Kernel, which came to light in 2016.
The code was used internally by Cisco in validation scripts to be included in shippin...
Members of the open source community are working on a new security-focused project for the Linux kernel. Named Linux Kernel Runtime Guard (LKRG), this is a loadable kernel module that will perform runtime integrity checking of the Linux kernel.
Its purpose is to detect exploitation attempts for known and unknwon security vulnerabilities against the Linux kernel and attempt to block attacks.
LKRG will also detect privilege escalation for running processes, and kill the running process...
This time it's a 'Huge Dirty COW' and Linus Torvalds has cleaned up after it
Linus Torvalds last week rushed a patch into the Linux kernel, after researchers discovered the patch for 2016's Dirty COW bug had a bug of its own.
Dirty COW is a privilege escalation vulnerability in Linux's “copy-on-write” mechanism, first documented in October 2016 and affecting both Linux and Android systems.
As The Register wrote at the time, the problem means "programs can set up a race condition to tamper with what should be a read-only root-owned executable mapped into m...
This time it's a 'Huge Dirty COW' and Linus Torvalds has cleaned up after it
Linus Torvalds last week rushed a patch into the Linux kernel, after researchers discovered the patch for 2016's Dirty COW bug had a bug of its own.
Dirty COW is a privilege escalation vulnerability in Linux's “copy-on-write” mechanism, first documented in October 2016 and affecting both Linux and Android systems.
As The Register wrote at the time, the problem means "programs can set up a race condition to tamper with what should be a read-only root-owned executable mapped into m...
A flaw in the original patch for the notorious Dirty COW vulnerability could allow an adversary to run local code on affected systems and exploit a race condition to perform a privilege escalation attack.
The flaw in the Dirty COW patch (CVE-2016-5195), released in October 2016, was identified by researchers at the security firm Bindecy. On Wednesday, they released details of the vulnerability (CVE-2017-1000405) found in the original Dirty COW patch, affecting several Linux distributions.<...
Official bug notice? Sure, but not before I get cred and LOLs
More than three-quarters of vulnerabilities are publicly reported online before National Vulnerability Database publication.
News sites, blogs and social media pages as well as more remote areas of the web including the dark web, paste sites, and criminal forums first published bugs more often than NIST's1 centralised National Vulnerability Database (NVD).
"This disparity between the unofficial and official communication of CVEs is placing a greater onus on CISOs and security teams, ...
Official bug notice? Sure, but not before I get cred and LOLs
More than three-quarters of vulnerabilities are publicly reported online before National Vulnerability Database publication.
News sites, blogs and social media pages as well as more remote areas of the web including the dark web, paste sites, and criminal forums first published bugs more often than NIST's1 centralised National Vulnerability Database (NVD).
"This disparity between the unofficial and official communication of CVEs is placing a greater onus on CISOs and security teams, ...
The Linux team has patched a security flaw in the Linux kernel that can be exploited to gain root-level code execution rights from a low-privileged process.
The security bug, tracked using the
identifier, was discovered by Google intern
using
, a security auditing tool created by Google.
According to Konovalov, the security bug affects all Linux kernels going back to version 2.6.14, released in October 2005, albeit he only tested and confirmed versions going ba...
Meanwhile, another nasty Linux bug surfaces
Google has posted an update for Android that, among other fixes, officially closes the Dirty COW vulnerability.
The December 2016 update covers a total of 74 CVE-listed security vulnerabilities in Android devices. These fixes should be landing on Nexus handsets devices very soon, if not already, and installed as soon as possible; other devices should be getting the updates shortly, depending on how on-the-ball your manufacturer and cell network is – you may never, sadly, see the updates ...
Meanwhile, another nasty Linux bug surfaces
Google has posted an update for Android that, among other fixes, officially closes the Dirty COW vulnerability.
The December 2016 update covers a total of 74 CVE-listed security vulnerabilities in Android devices. These fixes should be landing on Nexus handsets devices very soon, if not already, and installed as soon as possible; other devices should be getting the updates shortly, depending on how on-the-ball your manufacturer and cell network is – you may never, sadly, see the updates ...
The Dirty Cow vulnerability lived in Linux for close to a decade, and while it was patched in October in the kernel and in Linux distributions, Android users had to wait for more than a month for their fix.
Today, Google included a patch for CVE-2016-5195 in the monthly Android Security Bulletin, the final one for 2016. The Dirty Cow patch is one of 11 critical vulnerabilities, all of which are in the Dec. 5 patch level; a separate Dec. 1 patch level was also released today that included p...
Google’s November Android Security Bulletin, released Monday, patched 15 critical vulnerabilities and addressed 85 CVEs overall. But conspicuously absent is a fix for the Linux race condition vulnerability known as Dirty Cow (Copy-on-Write) that also impacts Android.
While Google didn’t issue an official fix for the Dirty Cow vulnerability (CVE-2016-5195), it did release “supplemental” firmware updates for its Nexus and Pixel handsets. According to Michael Cherny, head of security...
A nine-year-old Linux vulnerability that affects most of the major distributions has been recently used in public attacks. The flaw, nicknamed Dirty Cow because it lives in the copy-on-write (COW) feature in Linux, is worrisome because it can give a local attacker root privileges.
While the Linux kernel was patched on Wednesday, the major distributions are preparing patches. Red Hat, for example, told Threatpost that it has a temporary mitigation available through the kpatch dynamic kernel...
Widespread flaw can be easily exploited to hijack PCs, servers, gizmos, phones
Code dive Patch your Linux-powered systems, phones and gadgets as soon as possible, if you can, to kill off a kernel-level flaw affecting nearly every distro of the open-source operating system.
Dubbed Dirty COW, the privilege-escalation vulnerability potentially allows any installed application, or malicious code smuggled onto a box, to gain root-level access and completely hijack the device.
The programming bug gets its name from the copy-on-write mechanism in the Linux kernel; the...
Widespread flaw can be easily exploited to hijack PCs, servers, gizmos, phones
Code dive Patch your Linux-powered systems, phones and gadgets as soon as possible, if you can, to kill off a kernel-level flaw affecting nearly every distro of the open-source operating system.
Dubbed Dirty COW, the privilege-escalation vulnerability potentially allows any installed application, or malicious code smuggled onto a box, to gain root-level access and completely hijack the device.
The programming bug gets its name from the copy-on-write mechanism in the Linux kernel; the...
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