Bug 489932 (CVE-2009-0887) - CVE-2009-0887 pam: integer signedness error in _pam_StrTok()
Summary: CVE-2009-0887 pam: integer signedness error in _pam_StrTok()
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2009-0887
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL: http://web.nvd.nist.gov/view/vuln/det...
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-03-12 15:42 UTC by Vincent Danen
Modified: 2019-09-29 12:29 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-10-20 10:00:34 UTC


Attachments (Terms of Use)

Description Vincent Danen 2009-03-12 15:42:33 UTC
Common Vulnerabilities and Exposures assigned an identifier CVE-2009-0887 to
the following vulnerability:

Name: CVE-2009-0887
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0887
Assigned: 20090312
Reference: MLIST:[oss-security] 20090305 CVE Request -- pam
Reference: URL: http://openwall.com/lists/oss-security/2009/03/05/1
Reference: CONFIRM: http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?r1=1.9&r2=1.10&view=patch
Reference: CONFIRM: http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/libpam/pam_misc.c?view=log
Reference: BID:34010
Reference: URL: http://www.securityfocus.com/bid/34010
Reference: XF:linuxpam-pamstrtok-priv-escalation(49110)
Reference: URL: http://xforce.iss.net/xforce/xfdb/49110

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.

Comment 1 Tomas Mraz 2009-03-12 16:00:54 UTC
It is very questionable whether this problem is even a security vulnerability. As the attacker cannot manipulate the configuration files it would basically require a misconfiguration of pam for the attack to be possible.

Comment 3 Fedora Update System 2009-03-17 14:49:49 UTC
pam-1.0.4-2.fc9 has been submitted as an update for Fedora 9.
http://admin.fedoraproject.org/updates/pam-1.0.4-2.fc9

Comment 4 Fedora Update System 2009-03-17 14:50:16 UTC
pam-1.0.4-2.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/pam-1.0.4-2.fc10

Comment 5 Fedora Update System 2009-03-26 10:46:10 UTC
pam-1.0.4-3.fc9 has been submitted as an update for Fedora 9.
http://admin.fedoraproject.org/updates/pam-1.0.4-3.fc9

Comment 6 Fedora Update System 2009-03-30 16:43:52 UTC
pam-1.0.4-4.fc9 has been submitted as an update for Fedora 9.
http://admin.fedoraproject.org/updates/pam-1.0.4-4.fc9

Comment 7 Fedora Update System 2009-03-30 16:45:02 UTC
pam-1.0.4-4.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/pam-1.0.4-4.fc10

Comment 8 Fedora Update System 2009-04-14 15:52:49 UTC
pam-1.0.4-4.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2009-04-14 15:58:31 UTC
pam-1.0.4-4.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Tomas Hoger 2010-10-20 10:00:34 UTC
Closing not-a-security-bug based on comment #1.

Statement:

Red Hat does not consider this issue to be a security vulnerability. Affected function is only used to parse PAM configuration files and this bug can only be triggered by specific configuration created by the system administrator.


Note You need to log in before you can comment on or make changes to this bug.