SB2012100306 - Permissions, Privileges, and Access Controls in Linux kernel
Published: October 3, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012100306
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 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-1833)
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Race condition in the ecryptfs_mount function in fs/ecryptfs/main.c in the eCryptfs subsystem in the Linux kernel before 3.1 allows local users to bypass intended file permissions via a mount.ecryptfs_private mount with a mismatched uid.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=764355487ea220fdc2faf128d577d7f679b91f97
- http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00009.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
- http://www.ubuntu.com/usn/USN-1188-1
- https://bugzilla.redhat.com/show_bug.cgi?id=731172
- https://github.com/torvalds/linux/commit/764355487ea220fdc2faf128d577d7f679b91f97