CVE-2009-0887

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Summary

CVECVE-2009-0887
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-03-12 15:20:50 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionInteger 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.

Risk And Classification

Primary CVSS: v2.0 6.6 from [email protected]

AV:L/AC:M/Au:S/C:C/I:C/A:C

Problem Types: CWE-189 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:M/Au:S/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Linux-pam Linux-pam 0.99.1.0 All All All
Application Linux-pam Linux-pam 0.99.10.0 All All All
Application Linux-pam Linux-pam 0.99.2.0 All All All
Application Linux-pam Linux-pam 0.99.2.1 All All All
Application Linux-pam Linux-pam 0.99.3.0 All All All
Application Linux-pam Linux-pam 0.99.4.0 All All All
Application Linux-pam Linux-pam 0.99.5.0 All All All
Application Linux-pam Linux-pam 0.99.6.0 All All All
Application Linux-pam Linux-pam 0.99.6.1 All All All
Application Linux-pam Linux-pam 0.99.6.2 All All All
Application Linux-pam Linux-pam 0.99.6.3 All All All
Application Linux-pam Linux-pam 0.99.7.0 All All All
Application Linux-pam Linux-pam 0.99.7.1 All All All
Application Linux-pam Linux-pam 0.99.8.0 All All All
Application Linux-pam Linux-pam 0.99.8.1 All All All
Application Linux-pam Linux-pam 0.99.9.0 All All All
Application Linux-pam Linux-pam 1.0.0 All All All
Application Linux-pam Linux-pam 1.0.1 All All All
Application Linux-pam Linux-pam 1.0.2 All All All
Application Linux-pam Linux-pam All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
CVS Info for project pam af854a3a-2127-422b-91ae-364da2661108 pam.cvs.sourceforge.net
Fedora update for pam - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com
oss-security - CVE Request -- pam af854a3a-2127-422b-91ae-364da2661108 openwall.com Exploit
[SECURITY] Fedora 10 Update: pam-1.0.4-4.fc10 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com
[SECURITY] Fedora 9 Update: pam-1.0.4-4.fc9 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com
Support / Security / Advisories / / MDVSA-2009:077 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
Linux-PAM Configuration File Non-ASCII User Name Handling Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Patch
CVS Info for project pam af854a3a-2127-422b-91ae-364da2661108 pam.cvs.sourceforge.net
CVS Info for project pam MITRE pam.cvs.sourceforge.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

OrganizationPublishedContributorStatement
Red Hat2009-03-13Tomas HogerRed 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/

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