CVE-2009-2406
What it is
Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 6.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Weakness
- CWE-119 · Buffer errors
- Record status
- Modified
Affected
- Linux Kernel 2.6.24.7
- Linux Kernel 2.6.25.15
- Linux Kernel ≤ 2.6.30.3
- Linux Kernel 2.2.6
- Linux Kernel 2.6
- Linux Kernel 2.6.0
- Linux Kernel 2.6.1
- Linux Kernel 2.6.2
Attack profile CVSS 2.0 · 6.9
- Attack vector
- Local
- Complexity
- Medium
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
Raw vector
AV:L/AC:M/Au:N/C:C/I:C/A:C
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-2406.md and follow it. Check whether this project is affected by CVE-2009-2406. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://secunia.com/advisories/35985
- http://secunia.com/advisories/36045
- http://secunia.com/advisories/36051
- http://secunia.com/advisories/36054
- http://www.debian.org/security/2009/dsa-1844
- http://www.debian.org/security/2009/dsa-1845
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.4
- http://www.securityfocus.com/bid/35851
- http://www.vupen.com/english/advisories/2009/2041
- http://secunia.com/advisories/35985
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6352a29305373ae6196491e6d4669f301e26492e
- http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
- http://risesecurity.org/advisories/RISE-2009002.txt
- http://secunia.com/advisories/35985
- http://secunia.com/advisories/36045
- http://secunia.com/advisories/36051
- http://secunia.com/advisories/36054
- http://secunia.com/advisories/36116
- http://secunia.com/advisories/36131
- http://secunia.com/advisories/37471
- http://www.debian.org/security/2009/dsa-1844
- http://www.debian.org/security/2009/dsa-1845
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.4
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
- http://www.redhat.com/support/errata/RHSA-2009-1193.html
- http://www.securityfocus.com/archive/1/505334/100/0/threaded
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- http://www.securityfocus.com/bid/35851
- http://www.securitytracker.com/id?1022663
- http://www.ubuntu.com/usn/usn-807-1
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://www.vupen.com/english/advisories/2009/2041
- http://www.vupen.com/english/advisories/2009/3316
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10072
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8246