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CVE-2007-5939

10.0 · HIGH

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 impa…

Published Dec 6, 2007heimdalCWE-119EPSS 3.80%

Overview

CVE-2007-5939 is a high-severity vulnerability affecting heimdal heimdal. It was published on December 6, 2007 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from heimdal. Update heimdal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refbugs.gentoo.org/show_bug.cgi?id=199207Refmarc.info/?l=full-disclosure&m=119704362903699&w=2Refosvdb.org/44750Refsecuritytracker.com/id?1019057Refwww.mandriva.com/security/advisories?name=MDKSA-2007:239Refwww.securityfocus.com/bid/26758Refbugs.gentoo.org/show_bug.cgi?id=199207Refmarc.info/?l=full-disclosure&m=119704362903699&w=2Refosvdb.org/44750Refsecuritytracker.com/id?1019057

How CyberStrike helps

Frequently asked questions

What is CVE-2007-5939?

CVE-2007-5939 is a high-severity vulnerability affecting heimdal heimdal. It was published on December 6, 2007 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2007-5939?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-5939?

Check the references section for vendor advisories and patches from heimdal. Update heimdal to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-5939?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-5939 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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