CVE-2013-2850: Buffer Overflow
First published: Tue May 28 2013(Updated: )
A flaw was found in the way Linux kernel's iSCSI target processed large keys. If a key was larger than 64 bytes, as checked by iscsi_check_key(), the error response packet, generated by iscsi_add_notunderstood_response(), would still attempt to copy the entire key into the packet, overflowing the structure on the heap. A remote attacker could use this flaw to escalate their privileges on the system. Acknowledgements: Red Hat would like to thank Kees Cook for reporting this issue.
Credit: chrome-cve-admin@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=3.1<3.2.47 | |
| Linux Kernel | >=3.3<3.4.48 | |
| Linux Kernel | >=3.5<3.9.5 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cea4dcfdad926a27a18e188720efe0f2c9403456
- http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00018.html
- http://www.openwall.com/lists/oss-security/2013/06/01/2
- http://www.ubuntu.com/usn/USN-1844-1
- http://www.ubuntu.com/usn/USN-1845-1
- http://www.ubuntu.com/usn/USN-1846-1
- http://www.ubuntu.com/usn/USN-1847-1
- https://bugzilla.redhat.com/show_bug.cgi?id=968036
- https://github.com/torvalds/linux/commit/cea4dcfdad926a27a18e188720efe0f2c9403456
- https://launchpad.net/bugs/cve/CVE-2013-2850
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=969272
- http://git.kernel.org/cgit/linux/kernel/git/nab/target-pending.git/commit/?id=cea4dcfdad926a27a18e188720efe0f2c9403456
- https://rhn.redhat.com/errata/RHSA-2013-1264.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cea4dcfdad926a27a18e188720efe0f2c9403456
- https://security-tracker.debian.org/tracker/CVE-2013-2850
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2850
- https://nvd.nist.gov/vuln/detail/CVE-2013-2850
- https://ubuntu.com/security/CVE-2013-2850
Frequently Asked Questions
What is the severity of CVE-2013-2850?
CVE-2013-2850 has a medium severity due to the potential for a denial of service caused by a buffer overflow.
How do I fix CVE-2013-2850?
To fix CVE-2013-2850, upgrade to a version of the Linux kernel that is 5.10.223-1 or later, or 6.1.123-1 or later.
What systems are affected by CVE-2013-2850?
CVE-2013-2850 affects specific versions of the Linux kernel ranging from 3.1 to 3.9.5.
What types of attacks can exploit CVE-2013-2850?
CVE-2013-2850 can be exploited by sending specially crafted iSCSI requests with oversized keys.
Is CVE-2013-2850 still a concern in modern systems?
CVE-2013-2850 is less of a concern in modern systems that have applied the necessary kernel updates.
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