CVE-2007-2243
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.40% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 83.6% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2007-04-25 16:00Z19 YR AGO
- Last updated
- 2024-08-07 13:33Z2 YR AGO
- Reserved
- 2007-04-25
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-287Improper AuthenticationClass
- Data version
- 5.1
- Document digest
- 4cd8e56088265b6827536ac47f54c3618d28b93707b44d614f7d1f5f2ba3b6f5
05 Affected products
06 References
- lists.grok.org.uk20070421 OpenSSH - System Account Enumeration if S/Key is usedhttp://lists.grok.org.uk/pipermail/full-disclosure/2007-April/053906.html
- www.securityfocus.com23601http://www.securityfocus.com/bid/23601
- securityreason.com2631http://securityreason.com/securityalert/2631
- www.osvdb.org34600http://www.osvdb.org/34600
- exchange.xforce.ibmcloud.comopenssh-challenge-information-disclosure(33794)https://exchange.xforce.ibmcloud.com/vulnerabilities/33794
- lists.grok.org.uk20070424 OpenSSH - System Account Enumeration if S/Key is usedhttp://lists.grok.org.uk/pipermail/full-disclosure/2007-April/053951.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20191107-0003/
07 Fixed in
Debian 12
- openssh No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openssh No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openssh No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.