HOMEVULNERABILITIESCVE-2014-9421
CRITICAL

CVE-2014-9421

NVD-CWE-OtherPublished: February 19, 2015· Updated: Jun 17, 2026

9.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2014-9421 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected Vendors & Products

mit1 product(s)
kerberos 5
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
ADVISORYhttp://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt

All References (28)

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

Quick Facts

CVE IDCVE-2014-9421
CVSS Score9.0 / 10
SeverityCRITICAL
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 19, 2015

Related CVEs (NVD-CWE-Other)

CVE-2002-0747
10.0
CVE-1999-0745
10.0
CVE-1999-1405
10.0
CVE-2002-1468
10.0
CVE-2001-1080
10.0
CVE-1999-0789
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2014-9421 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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