CVE-2007-3999

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-09-05 · updated 2026-06-16
Weakness: CWE-119

Description

Stack-based buffer overflow in the svcauth_gss_validate function in lib/rpc/svc_auth_gss.c in the RPCSEC_GSS RPC library (librpcsecgss) in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerberos administration daemon (kadmind) and some third-party applications that use krb5, allows remote attackers to cause a denial of service (daemon crash) and probably execute arbitrary code via a long string in an RPC message.

Affected products

MIT Kerberos 5: 1.4, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.5 (+6)

References

http://docs.info.apple.com/article.html?artnum=307041
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html
http://lists.rpath.com/pipermail/security-announce/2007-September/000237.html
http://secunia.com/advisories/26676
http://secunia.com/advisories/26680
http://secunia.com/advisories/26684
http://secunia.com/advisories/26691
http://secunia.com/advisories/26697
http://secunia.com/advisories/26699
http://secunia.com/advisories/26700
http://secunia.com/advisories/26705
http://secunia.com/advisories/26713

Get alerted when CVE-2007-3999 or the next vulnerability affects your stack