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CVE-2008-4109
A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE…
Medium5.0EPSS 28.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 28.6% · top 1.9% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (10)
- USN-649-1 (opens in a new tab)vendor-advisoryx_transferred
- openssh-signalhandler-dos(45202) (opens in a new tab)vdb-entryx_transferred
- 31885 (opens in a new tab)third-party-advisoryx_transferred
- 1020891 (opens in a new tab)vdb-entryx_transferred
- DSA-1638 (opens in a new tab)vendor-advisoryx_transferred
- SUSE-SR:2008:020 (opens in a new tab)vendor-advisoryx_transferred
- 32080 (opens in a new tab)third-party-advisoryx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=498678 (opens in a new tab)x_transferred
- 32181 (opens in a new tab)third-party-advisoryx_transferred
- [oss-security] 20240701 CVE-2024-6387: RCE in OpenSSH's server, on glibc-based Linux systems (opens in a new tab)mailing-listx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2008-4109)Record last updated .