CVE-2009-0887
Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM (aka pam)...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-0887- CVSS 2.0
- 6.6 Medium
AV:L/AC:M/Au:S/C:C/I:C/A:C - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-0887- Updated
- 2026-11-02
EUVDEUVD-2009-0884 No score
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.
- Record
EUVD-2009-0884- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p45g-44mp-mq74 No score
Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM (aka pam)...
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.
- Record
GHSA-p45g-44mp-mq74- Updated
- 2026-11-02
OSVBELL-CVE-2009-0887
CVE-2009-0887 does not affect BellSoft software
- Record
BELL-CVE-2009-0887- CVSS 2.0
- 6.6 Medium
AV:L/AC:M/Au:S/C:C/I:C/A:C - Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2009-0887- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-0887 No score
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.
- Record
DEBIAN-CVE-2009-0887- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-0887 is a medium vulnerability (CVSS 6.6) in Linux-pam, published March 12, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.93%, the 80th percentile. Fixed in pam 1.0.1-10.
References
pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&%3Br2=1.10&%3Bview=patch
mandriva.com/security/advisories?name=MDVSA-2009:077
openwall.com/lists/oss-security/2009/03/05/1
redhat.com/archives/fedora-package-announce/2009-April/msg00398.html
exchange.xforce.ibmcloud.com/vulnerabilities/49110
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securityfocus.com/bid/34010
secunia.com/advisories/34733
nvd.nist.gov/vuln/detail/CVE-2009-0887
github.com/advisories/GHSA-p45g-44mp-mq74
docs.bell-sw.com/security/cves/CVE-2009-0887
security-tracker.debian.org/tracker/CVE-2009-0887