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TI-2006-04867 Aliases CVE-2006-5051GHSA-mq5h-r3rg-j9hg

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a…

Priority HIGH 65CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.

Summary

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Why it matters now

EPSS 0.45588 98th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*up to 4.4VulnerableOpenBSD
cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*3.1VulnerableDebian
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.3.9; 10.4 – 10.4.8VulnerableApple
cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*before 10.3.9; 10.4 – 10.4.8VulnerableApple
  • cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* Versions up to 4.4 Vulnerable ·OpenBSD
  • cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Debian
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.3.9; 10.4 – 10.4.8 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:* Versions before 10.3.9; 10.4 – 10.4.8 Vulnerable ·Apple

Remediation

Red Hat 2 advisories

  • RHSA-2006:0698 Released 2006-09-29 · Red Hat rating Important
    openssh security update
    • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 openssh-3.1p1-21, openssh-3.1p1-21.i386, openssh-3.1p1-21.ia64 +8
    • Red Hat Enterprise Linux ES version 2.1 openssh-3.1p1-21, openssh-3.1p1-21.i386, openssh-askpass-3.1p1-21.i386 +3
    • Red Hat Enterprise Linux WS version 2.1 openssh-3.1p1-21, openssh-3.1p1-21.i386, openssh-askpass-3.1p1-21.i386 +3
    • Red Hat Linux Advanced Workstation 2.1 openssh-3.1p1-21, openssh-3.1p1-21.ia64, openssh-askpass-3.1p1-21.ia64 +3
  • RHSA-2006:0697 Released 2006-09-29 · Red Hat rating Important
    openssh security update
    • Red Hat Desktop version 3 openssh-3.6.1p2-33.30.12, openssh-3.6.1p2-33.30.12.i386, openssh-askpass-3.6.1p2-33.30.12 +7
    • Red Hat Enterprise Linux AS version 3 openssh-3.6.1p2-33.30.12, openssh-3.6.1p2-33.30.12.i386, openssh-3.6.1p2-33.30.12.ia64 +17
    • Red Hat Enterprise Linux AS version 4 openssh-3.9p1-8.RHEL4.17, openssh-3.9p1-8.RHEL4.17.i386, openssh-3.9p1-8.RHEL4.17.ia64 +17
    • Red Hat Enterprise Linux Desktop version 4 openssh-3.9p1-8.RHEL4.17, openssh-3.9p1-8.RHEL4.17.i386, openssh-askpass-3.9p1-8.RHEL4.17 +7
    • Red Hat Enterprise Linux ES version 3 openssh-3.6.1p2-33.30.12, openssh-3.6.1p2-33.30.12.i386, openssh-3.6.1p2-33.30.12.ia64 +12
    • Red Hat Enterprise Linux ES version 4 openssh-3.9p1-8.RHEL4.17, openssh-3.9p1-8.RHEL4.17.i386, openssh-3.9p1-8.RHEL4.17.ia64 +12
    • Red Hat Enterprise Linux WS version 3 openssh-3.6.1p2-33.30.12, openssh-3.6.1p2-33.30.12.i386, openssh-3.6.1p2-33.30.12.ia64 +12
    • Red Hat Enterprise Linux WS version 4 openssh-3.9p1-8.RHEL4.17, openssh-3.9p1-8.RHEL4.17.i386, openssh-3.9p1-8.RHEL4.17.ia64 +12

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2006:0697
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 Fixed RHSA-2006:0698
Red Hat Enterprise Linux AS version 3Fixed RHSA-2006:0697
Red Hat Enterprise Linux AS version 4Fixed RHSA-2006:0697
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2006:0697
Red Hat Enterprise Linux ES version 2.1Fixed RHSA-2006:0698
Red Hat Enterprise Linux ES version 3Fixed RHSA-2006:0697
Red Hat Enterprise Linux ES version 4Fixed RHSA-2006:0697
Red Hat Enterprise Linux WS version 2.1Fixed RHSA-2006:0698
Red Hat Enterprise Linux WS version 3Fixed RHSA-2006:0697
Red Hat Enterprise Linux WS version 4Fixed RHSA-2006:0697
Red Hat Linux Advanced Workstation 2.1Fixed RHSA-2006:0698

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-5051
  2. 2026-10-03 Alias added: GHSA-mq5h-r3rg-j9hg

References

Advisory 16

Other 19

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences