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Fencer Vulns
critical 10.0

CVE-2007-3999 in the critical feed json

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…

published 2007-09-05 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3983

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.9%
EPSS 10.9% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.6.dfsg.1-7

debian advisories DEBIAN-CVE-2007-3999

  • nfs-utils-lib RHEL 5 1.0.8-7.2.z2
  • nfs-utils-lib RHEL 4 1.0.6-8.z1
  • krb5 RHEL 5 1.5-29
  • krb5-libs RHEL 5 1.5-29
  • krb5-server RHEL 5 1.5-29
  • krb5-workstation RHEL 5 1.5-29

red hat advisories RHSA-2007:0951RHSA-2007:0913RHSA-2007:0858

  • krb5 openSUSE Tumbleweed 1.19.2-2.2

opensuse advisories openSUSE-SU-2024:10899-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-3999 updated

krb5 RPC library buffer overflow

  • Red Hat Enterprise Linux (v. 5 server) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29, nfs-utils-lib 1.0.8-7.2.z2
    fixed: vendor fix RHSA-2007:0858
  • Red Hat Enterprise Linux AS version 4 nfs-utils-lib 1.0.6-8.z1
    fixed: vendor fix RHSA-2007:0913
  • Red Hat Enterprise Linux Desktop (v. 5 client) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29, nfs-utils-lib 1.0.8-7.2.z2
    fixed: vendor fix RHSA-2007:0858
  • Red Hat Enterprise Linux Desktop version 4 nfs-utils-lib 1.0.6-8.z1
    fixed: vendor fix RHSA-2007:0913
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29, nfs-utils-lib 1.0.8-7.2.z2
    fixed: vendor fix RHSA-2007:0858
  • Red Hat Enterprise Linux ES version 4 nfs-utils-lib 1.0.6-8.z1 Red Hat Enterprise Linux WS version 4 nfs-utils-lib 1.0.6-8.z1
    fixed: vendor fix RHSA-2007:0913

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

10.91% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.