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Vulnerability Details : CVE-2011-2928

The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.
Publish Date : 2011-08-29 Last Update Date : 2020-07-31
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 476

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2928 oval:org.opensuse.security:def:20112928 unix
DSA-2303-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14248 unix
DSA-2303-2 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14888 unix
DSA-2310-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14257 unix
SUSE-SU-2013:1832-1 -- Security update for Linux kernel oval:org.mitre.oval:def:25739 unix
USN-1225-1 -- linux vulnerabilities oval:org.mitre.oval:def:21107 unix
USN-1228-1 -- linux-ti-omap4 vulnerabilities oval:org.mitre.oval:def:20812 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-2011-2928

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.1 - * * Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.1 RC1 * * Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.1 RC2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 4

- References For CVE-2011-2928

http://www.openwall.com/lists/oss-security/2011/08/19/1
MLIST [oss-security] 20110819 CVE request: Linux: ZERO_SIZE_PTR dereference for long symlinks in Be FS
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=338d0f0a6fbc82407864606f5b64b75aeb3c70f2 CONFIRM
https://exchange.xforce.ibmcloud.com/vulnerabilities/69343
XF linux-kernel-be-dos(69343)
http://www.securityfocus.com/archive/1/519387/100/0/threaded
BUGTRAQ 20110819 [PRE-SA-2011-06] Linux kernel: ZERO_SIZE_PTR dereference for long symlinks in Be FS
http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt
http://www.openwall.com/lists/oss-security/2011/08/19/5
MLIST [oss-security] 20110819 Re: CVE request: Linux: ZERO_SIZE_PTR dereference for long symlinks in Be FS
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3 CONFIRM
http://securityreason.com/securityalert/8360
SREASON 8360
http://www.securityfocus.com/bid/49256
BID 49256 Linux Kernel 'fs/befs/linuxvfs.c' Local Denial of Service Vulnerability Release Date:2013-12-13

- Metasploit Modules Related To CVE-2011-2928

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


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