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Vulnerability Details : CVE-2011-4077

Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via an XFS image containing a symbolic link with a long pathname.
Publish Date : 2012-01-27 Last Update Date : 2013-02-14
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- CVSS Scores & Vulnerability Types

CVSS Score
6.9
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute CodeOverflowMemory corruption
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
6.9
AV:L/AC:M/Au:N/C:C/I:C/A:C 2011-04-08 2011-04-08
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-4077 oval:org.opensuse.security:def:20114077 unix
DSA-2389-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:15414 unix
ELSA-2012:0007: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:23091 unix
ELSA-2012:0350: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:23710 unix
RHSA-2012:0007: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:21155 unix
RHSA-2012:0007: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20120007 unix
RHSA-2012:0350: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:21098 unix
RHSA-2012:0350: kernel security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20120350 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-4077

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 2.6.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2011-4077

http://secunia.com/advisories/48964
SECUNIA 48964
http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/
http://www.openwall.com/lists/oss-security/2011/10/26/3
MLIST [oss-security] 20111026 Re: CVE Request -- kernel: xfs: potential buffer overflow in xfs_readlink()
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html
MLIST [xfs] 20111018 [PATCH] Fix possible memory corruption in xfs_readlink
http://www.openwall.com/lists/oss-security/2011/10/26/1
MLIST [oss-security] 20111026 CVE Request -- kernel: xfs: potential buffer overflow in xfs_readlink()
https://bugzilla.redhat.com/show_bug.cgi?id=749156 CONFIRM

- Metasploit Modules Related To CVE-2011-4077

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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