SB2012080701 - Input validation error in QEMU
Published: August 7, 2012 Updated: August 4, 2020
Security Bulletin ID
SB2012080701
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2012-2652)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The bdrv_open function in Qemu 1.0 does not properly handle the failure of the mkstemp function, when in snapshot node, which allows local users to overwrite or read arbitrary files via a symlink attack on an unspecified temporary file.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commit;h=eba25057b9a5e19d10ace2bc7716667a31297169
- http://git.qemu.org/?p=qemu-stable-0.15.git;a=log
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00024.html
- http://secunia.com/advisories/50132
- http://secunia.com/advisories/50689
- http://www.debian.org/security/2012/dsa-2545
- http://www.securityfocus.com/bid/53725
- http://www.ubuntu.com/usn/USN-1522-1