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Fencer Vulns
high 8.3

CVE-2007-2443 json

Integer signedness error in the gssrpc__svcauth_unix function in svc_auth_unix.c in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earl…

published 2007-06-26 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2438

cvss
8.3
version 2.0, 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

Integer signedness error in the gssrpc__svcauth_unix function in svc_auth_unix.c in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earlier might allow remote attackers to execute arbitrary code via a negative length value.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.6.dfsg.1-5

debian advisories DEBIAN-CVE-2007-2443

  • krb5 RHEL 4 1.3.4-49
  • krb5 RHEL 5 1.5-26
  • krb5-libs RHEL 4 1.3.4-49
  • krb5-libs RHEL 5 1.5-26
  • krb5-server RHEL 4 1.3.4-49
  • krb5-server RHEL 5 1.5-26
  • krb5-workstation RHEL 4 1.3.4-49
  • krb5-workstation RHEL 5 1.5-26

red hat advisories RHSA-2007:0562RHSA-2007:0384

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-2007-2443 updated

krb5 RPC library stack overflow

  • Red Hat Desktop version 3 krb5 1.2.7-66, krb5-libs 1.2.7-66, krb5-server 1.2.7-66, krb5-workstation 1.2.7-66
    fixed: vendor fix RHSA-2007:0384
  • Red Hat Enterprise Linux (v. 5 server) krb5 1.5-26, krb5-libs 1.5-26, krb5-server 1.5-26, krb5-workstation 1.5-26
    fixed: vendor fix RHSA-2007:0562
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 krb5 1.2.2-47, krb5-libs 1.2.2-47, krb5-server 1.2.2-47, krb5-workstation 1.2.2-47 Red Hat Enterprise Linux AS version 3 krb5 1.2.7-66, krb5-libs 1.2.7-66, krb5-server 1.2.7-66, krb5-workstation 1.2.7-66
    fixed: vendor fix RHSA-2007:0384
  • Red Hat Enterprise Linux AS version 4 krb5 1.3.4-49, krb5-libs 1.3.4-49, krb5-server 1.3.4-49, krb5-workstation 1.3.4-49 Red Hat Enterprise Linux Desktop (v. 5 client) krb5 1.5-26, krb5-libs 1.5-26, krb5-server 1.5-26, krb5-workstation 1.5-26 Red Hat Enterprise Linux Desktop version 4 krb5 1.3.4-49, krb5-libs 1.3.4-49, krb5-server 1.3.4-49, krb5-workstation 1.3.4-49 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5 1.5-26, krb5-libs 1.5-26, krb5-server 1.5-26, krb5-workstation 1.5-26
    fixed: vendor fix RHSA-2007:0562
  • Red Hat Enterprise Linux ES version 2.1 krb5 1.2.2-47, krb5-libs 1.2.2-47, krb5-server 1.2.2-47, krb5-workstation 1.2.2-47 Red Hat Enterprise Linux ES version 3 krb5 1.2.7-66, krb5-libs 1.2.7-66, krb5-server 1.2.7-66, krb5-workstation 1.2.7-66
    fixed: vendor fix RHSA-2007:0384
  • Red Hat Enterprise Linux ES version 4 krb5 1.3.4-49, krb5-libs 1.3.4-49, krb5-server 1.3.4-49, krb5-workstation 1.3.4-49
    fixed: vendor fix RHSA-2007:0562
  • Red Hat Enterprise Linux WS version 2.1 krb5 1.2.2-47, krb5-libs 1.2.2-47, krb5-server 1.2.2-47, krb5-workstation 1.2.2-47 Red Hat Enterprise Linux WS version 3 krb5 1.2.7-66, krb5-libs 1.2.7-66, krb5-server 1.2.7-66, krb5-workstation 1.2.7-66
    fixed: vendor fix RHSA-2007:0384
  • Red Hat Enterprise Linux WS version 4 krb5 1.3.4-49, krb5-libs 1.3.4-49, krb5-server 1.3.4-49, krb5-workstation 1.3.4-49
    fixed: vendor fix RHSA-2007:0562
show 1 more
  • Red Hat Linux Advanced Workstation 2.1 krb5 1.2.2-47, krb5-libs 1.2.2-47, krb5-server 1.2.2-47, krb5-workstation 1.2.2-47
    fixed: vendor fix RHSA-2007:0384

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 2.0 8.3 AV:A/AC:L/Au:N/C:C/I:C/A:C

References

Sources

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