CVE-2014-4344

Home/CVE/The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x t

CVE

The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x t

The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.

HIGH · CVSS 7.8 EPSS 0.0527

Schedule remediation

EPSS percentile: top 10% of all CVEs by exploitation likelihood
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Weakness Classification

CWE-476NULL Pointer Dereference

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Affected Products & Versions

debian linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux hpc nodeall versions
redhat enterprise linux serverall versions
redhat enterprise linux workstationall versions
mit kerberos 5all versions

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Scoring & Timeline

7.8

HIGH · CVSS v2 (legacy) · cve@mitre.org

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Published to NVD14 Aug 2014 · 05:01 AM

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10004-1
rhsaRHSA-2015:0439Moderate
usnUSN-2310-1
rhsaRHSA-2014:1389Moderate
rhsaRHSA-2014:1245Moderate

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://advisories.mageia.org/MGASA-2014-0345.html

http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970Issue TrackingThird Party Advisory

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html

http://rhn.redhat.com/errata/RHSA-2015-0439.htmlThird Party Advisory

http://secunia.com/advisories/59102

Show all 19 references

http://secunia.com/advisories/60082

http://secunia.com/advisories/60448

http://secunia.com/advisories/61051

http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html

http://www.debian.org/security/2014/dsa-3000Third Party Advisory

http://www.mandriva.com/security/advisories?name=MDVSA-2014:165

http://www.osvdb.org/109389

http://www.securityfocus.com/bid/69160

http://www.securitytracker.com/id/1030706

https://bugzilla.redhat.com/show_bug.cgi?id=1121877

https://exchange.xforce.ibmcloud.com/vulnerabilities/95210

https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b

https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edcIssue TrackingPatchThird Party Advisory

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