CVE-2014-4344 — NULL Pointer Dereference in Kerberos 5

CWE-476 — NULL Pointer Dereference9 documents8 sources
Severity
7.8HIGHNVD
EPSS
5.3%
top 9.99%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
MIT Krb5Debian LinuxMIT Kerberos 5+4 more
Timeline
PublishedAug 14
Latest updateMay 13

Description

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.

CVSS vector

AV:N/AC:L/C:N/I:N/A:CExploitability: 10.0 | Impact: 6.9

Affected Packages6 packages

▶Debianmit/krb5< 1.12.1+dfsg-5+3
▶NVDmit/kerberos_513 versions+12

Also affects: Debian Linux 7.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-335x-2h4v-298w: The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech↗2022-05-13
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OSV
CVE-2014-4344: The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech↗2014-08-14
▶
CVEList
CVE-2014-4344: The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech↗2014-08-14
▶

📋Vendor Advisories

3
Ubuntu
Kerberos vulnerabilities↗2014-08-11
▶
Red Hat
krb5: NULL pointer dereference flaw in SPNEGO acceptor for continuation tokens↗2014-07-15
▶
Debian
CVE-2014-4344: krb5 - The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mec...↗2014
▶

💬Community

2
Bugzilla
CVE-2014-4343 CVE-2014-4344 krb5: various flaws [fedora-all]↗2014-07-22
▶
Bugzilla
CVE-2014-4344 krb5: NULL pointer dereference flaw in SPNEGO acceptor for continuation tokens↗2014-07-22
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CVE-2014-4344 — NULL Pointer Dereference in Kerberos 5 | cvebase