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TI-2007-02161 Aliases CVE-2007-2243GHSA-p5mx-m79g-73hx

OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote…

Priority LOW 27CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Partial · None · None
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote attackers to determine the existence of user accounts by attempting to authenticate via S/KEY, which displays a different response if the user account exists, a similar issue to CVE-2001-1483.

Why it matters now

EPSS 0.02405 84th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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 · 62

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:1.2:*:*:*:*:*:*:*1.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:1.2.1:*:*:*:*:*:*:*1.2.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:1.2.2:*:*:*:*:*:*:*1.2.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:1.2.3:*:*:*:*:*:*:*1.2.3VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:1.2.27:*:*:*:*:*:*:*1.2.27VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.1:*:*:*:*:*:*:*2.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.1.1:*:*:*:*:*:*:*2.1.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.2:*:*:*:*:*:*:*2.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.3:*:*:*:*:*:*:*2.3VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.5:*:*:*:*:*:*:*2.5VulnerableOpenBSD
  • cpe:2.3:a:openbsd:openssh:1.2:*:*:*:*:*:*:* Versions 1.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:1.2.27:*:*:*:*:*:*:* Versions 1.2.27 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.5:*:*:*:*:*:*:* Versions 2.5 Vulnerable ·OpenBSD
Show 52 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:2.5.1:*:*:*:*:*:*:*2.5.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.5.2:*:*:*:*:*:*:*2.5.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.9:*:*:*:*:*:*:*2.9VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.9.9:*:*:*:*:*:*:*2.9.9VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.9.9p2:*:*:*:*:*:*:*2.9.9p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.9p1:*:*:*:*:*:*:*2.9p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:2.9p2:*:*:*:*:*:*:*2.9p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0:*:*:*:*:*:*:*3.0VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0.1:*:*:*:*:*:*:*3.0.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0.1p1:*:*:*:*:*:*:*3.0.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0.2:*:*:*:*:*:*:*3.0.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0.2p1:*:*:*:*:*:*:*3.0.2p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.0p1:*:*:*:*:*:*:*3.0p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.1:*:*:*:*:*:*:*3.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.1p1:*:*:*:*:*:*:*3.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.2:*:*:*:*:*:*:*3.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.2.2:*:*:*:*:*:*:*3.2.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.2.2p1:*:*:*:*:*:*:*3.2.2p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:*3.2.3p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.3:*:*:*:*:*:*:*3.3VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.3p1:*:*:*:*:*:*:*3.3p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.4:*:*:*:*:*:*:*3.4VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.4p1:*:*:*:*:*:*:*3.4p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.5:*:*:*:*:*:*:*3.5VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.5p1:*:*:*:*:*:*:*3.5p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.6:*:*:*:*:*:*:*3.6VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.6.1:*:*:*:*:*:*:*3.6.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:*3.6.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:*3.6.1p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.7:*:*:*:*:*:*:*3.7VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.7.1:*:*:*:*:*:*:*3.7.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.7.1p1:*:*:*:*:*:*:*3.7.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.7.1p2:*:*:*:*:*:*:*3.7.1p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.8:*:*:*:*:*:*:*3.8VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.8.1:*:*:*:*:*:*:*3.8.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:*3.8.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.9:*:*:*:*:*:*:*3.9VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.9.1:*:*:*:*:*:*:*3.9.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:3.9.1p1:*:*:*:*:*:*:*3.9.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.0:*:*:*:*:*:*:*4.0VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.0p1:*:*:*:*:*:*:*4.0p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.1:*:*:*:*:*:*:*4.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.1p1:*:*:*:*:*:*:*4.1p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.2:*:*:*:*:*:*:*4.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.2p1:*:*:*:*:*:*:*4.2p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.3:*:*:*:*:*:*:*4.3VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.3p1:*:*:*:*:*:*:*4.3p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.3p2:*:*:*:*:*:*:*4.3p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.4:*:*:*:*:*:*:*4.4VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.4p1:*:*:*:*:*:*:*4.4p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.5:*:*:*:*:*:*:*4.5VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:4.6:*:*:*:*:*:*:*4.6VulnerableOpenBSD
  • cpe:2.3:a:openbsd:openssh:2.5.1:*:*:*:*:*:*:* Versions 2.5.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.5.2:*:*:*:*:*:*:* Versions 2.5.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.9:*:*:*:*:*:*:* Versions 2.9 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.9.9:*:*:*:*:*:*:* Versions 2.9.9 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.9.9p2:*:*:*:*:*:*:* Versions 2.9.9p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.9p1:*:*:*:*:*:*:* Versions 2.9p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:2.9p2:*:*:*:*:*:*:* Versions 2.9p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0.1p1:*:*:*:*:*:*:* Versions 3.0.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0.2:*:*:*:*:*:*:* Versions 3.0.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0.2p1:*:*:*:*:*:*:* Versions 3.0.2p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.0p1:*:*:*:*:*:*:* Versions 3.0p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.1p1:*:*:*:*:*:*:* Versions 3.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.2.2p1:*:*:*:*:*:*:* Versions 3.2.2p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.2.3p1:*:*:*:*:*:*:* Versions 3.2.3p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.3p1:*:*:*:*:*:*:* Versions 3.3p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.4p1:*:*:*:*:*:*:* Versions 3.4p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.5p1:*:*:*:*:*:*:* Versions 3.5p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.6:*:*:*:*:*:*:* Versions 3.6 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.6.1:*:*:*:*:*:*:* Versions 3.6.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.6.1p1:*:*:*:*:*:*:* Versions 3.6.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.6.1p2:*:*:*:*:*:*:* Versions 3.6.1p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.7:*:*:*:*:*:*:* Versions 3.7 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.7.1:*:*:*:*:*:*:* Versions 3.7.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.7.1p1:*:*:*:*:*:*:* Versions 3.7.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.7.1p2:*:*:*:*:*:*:* Versions 3.7.1p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.8:*:*:*:*:*:*:* Versions 3.8 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.8.1:*:*:*:*:*:*:* Versions 3.8.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:* Versions 3.8.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.9:*:*:*:*:*:*:* Versions 3.9 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.9.1:*:*:*:*:*:*:* Versions 3.9.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:3.9.1p1:*:*:*:*:*:*:* Versions 3.9.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.0p1:*:*:*:*:*:*:* Versions 4.0p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.1p1:*:*:*:*:*:*:* Versions 4.1p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.2:*:*:*:*:*:*:* Versions 4.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.2p1:*:*:*:*:*:*:* Versions 4.2p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.3:*:*:*:*:*:*:* Versions 4.3 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.3p1:*:*:*:*:*:*:* Versions 4.3p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.3p2:*:*:*:*:*:*:* Versions 4.3p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.4:*:*:*:*:*:*:* Versions 4.4 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.4p1:*:*:*:*:*:*:* Versions 4.4p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.5:*:*:*:*:*:*:* Versions 4.5 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:4.6:*:*:*:*:*:*:* Versions 4.6 Vulnerable ·OpenBSD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2007-2243
  2. 2026-10-03 Alias added: GHSA-p5mx-m79g-73hx

References

Advisory 1

Other 4

  • TI-2023-19792 The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2023-10601 OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during… CVSS 3.1MEDIUM 6.5
  • TI-2018-11033 OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying… CVSS 3.1MEDIUM 5.9
  • TI-2016-08105 Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH before 7.4… CVSS 3.1HIGH 7.3
  • TI-2023-28040 In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host… CVSS 3.1MEDIUM 6.5
See all 145 →

Sources

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