National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-2691 Detail

Description

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 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.

Source:  MITRE
Description Last Modified:  08/14/2009

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

Vendor Statements (disclaimer)

Official Statement from Red Hat (11/04/2009)

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: https://rhn.redhat.com/errata/RHSA-2009-1540.html

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=00f89d218523b9bf6b522349c039d5ac80aa536d
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=13f0feafa6b8aead57a2a328e2fca6a5828bf286
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=704b836cbf19e885f8366bccb2e4b0474346c02d
http://lkml.org/lkml/2009/6/23/652
http://lkml.org/lkml/2009/6/23/653 Patch
http://marc.info/?l=linux-kernel&m=124718946021193 Patch
http://marc.info/?l=linux-kernel&m=124718949821250 Patch
http://www.debian.org/security/2010/dsa-2005
http://www.openwall.com/lists/oss-security/2009/08/11/1
http://www.securityfocus.com/bid/36019
http://www.vupen.com/english/advisories/2009/2246 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=516171
https://exchange.xforce.ibmcloud.com/vulnerabilities/52401
https://rhn.redhat.com/errata/RHSA-2009-1540.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-2691
NVD Published Date:
08/14/2009
NVD Last Modified:
08/16/2017