the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew  

Vulnerability Details : CVE-2009-2691

The mm_for_maps function in fs/proc/base.c in the Linux kernel and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.
Publish Date : 2009-08-14 Last Update Date : 2017-08-16
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
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) Obtain Information
CWE ID 200

- Vendor Statements

The Red Hat Security Response Team has rated this issue as having moderate security impact. We currently have no plans to fix this flaw in Red Hat Enterprise Linux 3, 4, and 5 as it is not possible to trigger the information leak if the suid_dumpable tunable is set to zero (which is the default). It was addressed in Red Hat Enterprise MRG via:
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
AV:L/AC:L/Au:N/C:P/I:N/A:N 2009-08-07 2009-07-10
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
DSA-2005 linux-2.6.24 -- privilege escalation/denial of service/sensitive memory leak oval:org.mitre.oval:def:7532 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-2009-2691

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 2.6.30 Version Details Vulnerabilities
2 OS Linux Linux Kernel 2.6.30 Rc7-git6 Version Details Vulnerabilities
3 OS Linux Linux Kernel 2.6.30 RC6 Version Details Vulnerabilities
4 OS Linux Linux Kernel 2.6.30 RC1 Version Details Vulnerabilities
5 OS Linux Linux Kernel 2.6.30 RC2 Version Details Vulnerabilities
6 OS Linux Linux Kernel 2.6.30 RC3 Version Details Vulnerabilities
7 OS Linux Linux Kernel 2.6.30 RC5 Version Details Vulnerabilities
8 OS Linux Linux Kernel Version Details Vulnerabilities
9 OS Linux Linux Kernel Version Details Vulnerabilities
10 OS Linux Linux Kernel Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 10

- References For CVE-2009-2691
REDHAT RHSA-2009:1540
XF linux-kernel-mmformaps-info-disclosure(52401) CONFIRM
MLIST [oss-security] 20090811 CVE-2009-2691 kernel: /proc/$pid/maps visible during initial setuid ELF loading
BID 36019 Linux Kernel 'fs/proc/base.c' Local Information Disclosure Vulnerability Release Date:2010-03-01
VUPEN ADV-2009-2246;a=commit;h=00f89d218523b9bf6b522349c039d5ac80aa536d CONFIRM;a=commit;h=13f0feafa6b8aead57a2a328e2fca6a5828bf286 CONFIRM
MLIST [linux-kernel] 20090710 [PATCH 2/2] mm_for_maps: take ->cred_guard_mutex to fix the race
MLIST [linux-kernel] 20090710 [PATCH 1/2] mm_for_maps: shift down_read(mmap_sem) to the caller
MLIST [linux-kernel] 20090623 [PATCH 1/1] mm_for_maps: simplify, use ptrace_may_access()
MLIST [linux-kernel] 20090623 [PATCH 0/1] mm_for_maps: simplify, use ptrace_may_access();a=commit;h=704b836cbf19e885f8366bccb2e4b0474346c02d CONFIRM

- Metasploit Modules Related To CVE-2009-2691

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

CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.