Vulnerability CVE-2007-5939
Published: 2007-12-06   Modified: 2012-02-12

Description:
The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows remote attackers to have an unknown impact via an invalid username. NOTE: the vulnerability was originally reported for ftpd.c, but this is incorrect.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
10/10
10/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Heimdal -> Heimdal 

 References:
http://osvdb.org/44750
http://bugs.gentoo.org/show_bug.cgi?id=199207
http://www.securityfocus.com/bid/26758
http://www.mandriva.com/security/advisories?name=MDKSA-2007:239
http://securitytracker.com/id?1019057
http://marc.info/?l=full-disclosure&m=119704362903699&w=2
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