National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-0887 Detail

Description

Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM (aka pam) 1.0.3 and earlier, when a configuration file contains non-ASCII usernames, might allow remote attackers to cause a denial of service, and might allow remote authenticated users to obtain login access with a different user's non-ASCII username, via a login attempt.

Source:  MITRE
Description Last Modified:  03/12/2009

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.6 MEDIUM
Vector: (AV:L/AC:M/Au:S/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 2.7


Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Provides administrator access
Allows unauthorized disclosure of information
Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (03/13/2009)

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-0887 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2009/03/05/1 Exploit
http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&r2=1.10&view=patch
http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?view=log
http://www.mandriva.com/security/advisories?name=MDVSA-2009:077
http://www.securityfocus.com/bid/34010 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/49110
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00398.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00420.html

Technical Details

Vulnerability Type (View All)

Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-0887
NVD Published Date:
03/12/2009
NVD Last Modified:
08/16/2017