SB2012062105 - Permissions, Privileges, and Access Controls in QEMU
Published: June 21, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012062105
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-2527)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The change_process_uid function in os-posix.c in Qemu 0.14.0 and earlier does not properly drop group privileges when the -runas option is used, which allows local guest users to access restricted files on the host.
Remediation
Install update from vendor's website.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081972.html
- http://lists.opensuse.org/opensuse-updates/2012-02/msg00009.html
- http://rhn.redhat.com/errata/RHSA-2011-1531.html
- http://secunia.com/advisories/45187
- http://secunia.com/advisories/45188
- http://secunia.com/advisories/45419
- http://secunia.com/advisories/47157
- http://secunia.com/advisories/47992
- http://ubuntu.com/usn/usn-1177-1
- http://www.openwall.com/lists/oss-security/2011/07/12/15
- http://www.openwall.com/lists/oss-security/2011/07/12/5
- http://www.osvdb.org/74752
- http://www.securityfocus.com/bid/48659
- https://bugs.launchpad.net/qemu/+bug/807893
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68539
- https://www.debian.org/security/2011/dsa-2282