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Fencer Vulns
high 7.5

CVE-2004-0642 json

Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key Distribution Center (KDC) library and (2) client l…

published 2004-09-10 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0641

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.3%
EPSS 8.3% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key Distribution Center (KDC) library and (2) client library for MIT Kerberos 5 (krb5) 1.3.4 and earlier may allow remote attackers to execute arbitrary code.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.3.4-3

debian advisories DEBIAN-CVE-2004-0642

  • krb5 RHEL 3 1.2.7-28
  • krb5-libs RHEL 3 1.2.7-28
  • krb5-server RHEL 3 1.2.7-28
  • krb5-workstation RHEL 3 1.2.7-28

red hat advisories RHSA-2004:350

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-2004-0642 updated

security flaw

  • Red Hat Desktop version 3 krb5 1.2.7-28, krb5-libs 1.2.7-28, krb5-server 1.2.7-28, krb5-workstation 1.2.7-28 Red Hat Enterprise Linux AS version 3 krb5 1.2.7-28, krb5-libs 1.2.7-28, krb5-server 1.2.7-28, krb5-workstation 1.2.7-28
    fixed: vendor fix RHSA-2004:350
  • Red Hat Enterprise Linux ES version 2.1
    fixed: vendor fix RHSA-2004:448
  • Red Hat Enterprise Linux ES version 3 krb5 1.2.7-28, krb5-libs 1.2.7-28, krb5-server 1.2.7-28, krb5-workstation 1.2.7-28
    fixed: vendor fix RHSA-2004:350
  • Red Hat Enterprise Linux WS version 2.1
    fixed: vendor fix RHSA-2004:448
  • Red Hat Enterprise Linux WS version 3 krb5 1.2.7-28, krb5-libs 1.2.7-28, krb5-server 1.2.7-28, krb5-workstation 1.2.7-28
    fixed: vendor fix RHSA-2004:350
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2004:448

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

8.26% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

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.