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      Last Modified:  03/12/2009

Quick Info

CVE Dictionary Entry:
CVE-2009-0887
Original release date:
03/12/2009
Last revised:
08/16/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
6.6 MEDIUM
Vector:
(AV:L/AC:M/Au:S/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
Exploitability Subscore:
2.7
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Medium
Authentication:
Required to exploit
Impact Type:
Provides administrator access, Allows complete confidentiality, integrity, and availability violation; 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 Type Source Name
http://openwall.com/lists/oss-security/2009/03/05/1 Exploit External Source MLIST [oss-security] 20090305 CVE Request -- pam
http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&r2=1.10&view=patch External Source CONFIRM 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 External Source CONFIRM 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 External Source MANDRIVA MDVSA-2009:077
http://www.securityfocus.com/bid/34010 Patch External Source BID 34010
https://exchange.xforce.ibmcloud.com/vulnerabilities/49110 External Source XF linuxpam-pamstrtok-priv-escalation(49110)
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00398.html External Source FEDORA FEDORA-2009-3204
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00420.html External Source FEDORA FEDORA-2009-3231

Technical Details

Vulnerability Type (View All)

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