NULL pointer dereference in Mit Kerberos 5
CVE-2014-4344
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.8 (High). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.066 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.066 · newest: 0.066 · change: 0.000
Affected products
- Mit Kerberos 5 — versions 1.10, 1.10.1, 1.10.2
- Debian Linux — versions 7.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Hpc Node — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
References
- github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc (Patch, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi
- github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b
- exchange.xforce.ibmcloud.com/vulnerabilities/95210 (vdb-entry)
- aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc
- rhn.redhat.com/errata/RHSA-2015-0439.html (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/60448 (third-party-advisory)
- support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html
- lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html (vendor-advisory)
- secunia.com/advisories/61051 (third-party-advisory)