Information disclosure in Linux kernel - CVE-2013-3226
Published: April 22, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU42879
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-3226
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The sco_sock_recvmsg function in net/bluetooth/sco.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
How to mitigate CVE-2013-3226
Install update from vendor's website.
linux (Ubuntu package) - update to 3.8.0-22.33
linux-lts-raring (Ubuntu package) - update to 3.8.0-23.34~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-23.34~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c8c499175f7d295ef867335bceb9a76a2c3cdc38
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
- http://www.openwall.com/lists/oss-security/2013/04/14/3
- http://www.ubuntu.com/usn/USN-1837-1
- https://github.com/torvalds/linux/commit/c8c499175f7d295ef867335bceb9a76a2c3cdc38
- https://lkml.org/lkml/2013/4/14/107