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Fencer Vulns
high 7.5

CVE-2008-0063 json

The Kerberos 4 support in KDC in MIT Kerberos 5 (krb5kdc) does not properly clear the unused portion of a buffer when generating an error m…

published 2008-03-19 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-0076

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

The Kerberos 4 support in KDC in MIT Kerberos 5 (krb5kdc) does not properly clear the unused portion of a buffer when generating an error message, which might allow remote attackers to obtain sensitive information, aka "Uninitialized stack values."

Patch / fix

  • apple mac_os_x 10.4.11, 10.5.2
  • apple mac_os_x_server 10.4.11, 10.5.2
  • krb5 Debian 14, Debian 13, Debian 12 1.6.dfsg.3~beta1-4

debian advisories DEBIAN-CVE-2008-0063

  • krb5 RHEL 2.1 1.2.2-48
  • krb5 RHEL 3 1.2.7-68
  • krb5-libs RHEL 2.1 1.2.2-48
  • krb5-libs RHEL 3 1.2.7-68
  • krb5-server RHEL 2.1 1.2.2-48
  • krb5-server RHEL 3 1.2.7-68
  • krb5-workstation RHEL 2.1 1.2.2-48
  • krb5-workstation RHEL 3 1.2.7-68

red hat advisories RHSA-2008:0182RHSA-2008:0181RHSA-2008:0180RHSA-2008:0164

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-2008-0063 updated

krb5: possible leak of sensitive data from krb5kdc using krb4 request

  • Red Hat Desktop version 3 krb5 1.2.7-68, krb5-libs 1.2.7-68, krb5-server 1.2.7-68, krb5-workstation 1.2.7-68
    fixed: vendor fix RHSA-2008:0181
  • Red Hat Enterprise Linux (v. 5 server) krb5 1.6.1-17.el5_1.1, krb5-libs 1.6.1-17.el5_1.1, krb5-server 1.6.1-17.el5_1.1, krb5-workstation 1.6.1-17.el5_1.1
    fixed: vendor fix RHSA-2008:0164
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 krb5 1.2.2-48, krb5-libs 1.2.2-48, krb5-server 1.2.2-48, krb5-workstation 1.2.2-48
    fixed: vendor fix RHSA-2008:0181
  • Red Hat Enterprise Linux AS EUS (v. 4.5) krb5 1.3.4-49.el4_5.1, krb5-libs 1.3.4-49.el4_5.1, krb5-server 1.3.4-49.el4_5.1, krb5-workstation 1.3.4-49.el4_5.1
    fixed: vendor fix RHSA-2008:0182
  • Red Hat Enterprise Linux AS version 3 krb5 1.2.7-68, krb5-libs 1.2.7-68, krb5-server 1.2.7-68, krb5-workstation 1.2.7-68
    fixed: vendor fix RHSA-2008:0181
  • Red Hat Enterprise Linux AS version 4 krb5 1.3.4-54.el4_6.1, krb5-libs 1.3.4-54.el4_6.1, krb5-server 1.3.4-54.el4_6.1, krb5-workstation 1.3.4-54.el4_6.1
    fixed: vendor fix RHSA-2008:0180
  • Red Hat Enterprise Linux Desktop (v. 5 client) krb5 1.6.1-17.el5_1.1, krb5-libs 1.6.1-17.el5_1.1, krb5-server 1.6.1-17.el5_1.1, krb5-workstation 1.6.1-17.el5_1.1
    fixed: vendor fix RHSA-2008:0164
  • Red Hat Enterprise Linux Desktop version 4 krb5 1.3.4-54.el4_6.1, krb5-libs 1.3.4-54.el4_6.1, krb5-server 1.3.4-54.el4_6.1, krb5-workstation 1.3.4-54.el4_6.1
    fixed: vendor fix RHSA-2008:0180
show 7 more
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5 1.6.1-17.el5_1.1, krb5-libs 1.6.1-17.el5_1.1, krb5-server 1.6.1-17.el5_1.1, krb5-workstation 1.6.1-17.el5_1.1
    fixed: vendor fix RHSA-2008:0164
  • Red Hat Enterprise Linux ES EUS (v. 4.5) krb5 1.3.4-49.el4_5.1, krb5-libs 1.3.4-49.el4_5.1, krb5-server 1.3.4-49.el4_5.1, krb5-workstation 1.3.4-49.el4_5.1
    fixed: vendor fix RHSA-2008:0182
  • Red Hat Enterprise Linux ES version 2.1 krb5 1.2.2-48, krb5-libs 1.2.2-48, krb5-server 1.2.2-48, krb5-workstation 1.2.2-48 Red Hat Enterprise Linux ES version 3 krb5 1.2.7-68, krb5-libs 1.2.7-68, krb5-server 1.2.7-68, krb5-workstation 1.2.7-68
    fixed: vendor fix RHSA-2008:0181
  • Red Hat Enterprise Linux ES version 4 krb5 1.3.4-54.el4_6.1, krb5-libs 1.3.4-54.el4_6.1, krb5-server 1.3.4-54.el4_6.1, krb5-workstation 1.3.4-54.el4_6.1
    fixed: vendor fix RHSA-2008:0180
  • Red Hat Enterprise Linux WS version 2.1 krb5 1.2.2-48, krb5-libs 1.2.2-48, krb5-server 1.2.2-48, krb5-workstation 1.2.2-48 Red Hat Enterprise Linux WS version 3 krb5 1.2.7-68, krb5-libs 1.2.7-68, krb5-server 1.2.7-68, krb5-workstation 1.2.7-68
    fixed: vendor fix RHSA-2008:0181
  • Red Hat Enterprise Linux WS version 4 krb5 1.3.4-54.el4_6.1, krb5-libs 1.3.4-54.el4_6.1, krb5-server 1.3.4-54.el4_6.1, krb5-workstation 1.3.4-54.el4_6.1
    fixed: vendor fix RHSA-2008:0180
  • Red Hat Linux Advanced Workstation 2.1 krb5 1.2.2-48, krb5-libs 1.2.2-48, krb5-server 1.2.2-48, krb5-workstation 1.2.2-48
    fixed: vendor fix RHSA-2008:0181

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

3.48% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

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.