Permissions, Privileges, and Access Controls in Linux kernel - CVE-2011-1833
Published: October 3, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43445
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-1833
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2011-1833
Install update from vendor's website.
Sources
- 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