CVE-2014-9421

Description

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

9.0

CVSS

Severity: Critical

CVSS 2.0 •

EPSS 3.85% Top 15%

Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory mandriva.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory mit.edu

Affected: n/a n/a

References

Link	Tags
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html	vendor advisory
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt	vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-0794.html	vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151103.html	vendor advisory
http://www.debian.org/security/2015/dsa-3153	vendor advisory
http://lists.opensuse.org/opensuse-updates/2015-02/msg00044.html	vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-0439.html	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00016.html	vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2015:069	vendor advisory
http://www.ubuntu.com/usn/USN-2498-1	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00011.html	vendor advisory
http://www.securityfocus.com/bid/72496	vdb entry
https://github.com/krb5/krb5/commit/a197e92349a4aa2141b5dff12e9dd44c2a2166e3
http://web.mit.edu/kerberos/advisories/2015-001-patch-r113.txt

Frequently Asked Questions

What is the severity of CVE-2014-9421?: CVE-2014-9421 has been scored as a critical severity vulnerability.
How to fix CVE-2014-9421?: To fix CVE-2014-9421, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-9421 being actively exploited in the wild?: It is possible that CVE-2014-9421 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.