CVE-2008-4109 json
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 us…
published 2008-09-17 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-4092
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 28.6%
- EPSS 28.6% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- openssh Debian 14, Debian 13, Debian 12 1:4.6p1-1
debian advisories DEBIAN-CVE-2008-4109
- debian.org/security/2008/dsa-1638 advisory
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
28.60% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
References
-
debian.org
/security/2008/dsa-1638
vendor-advisory, patch
-
ubuntu.com
/usn/usn-649-1
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2008-10/msg00004.html
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/45202
vdb-entry
-
secunia.com
/advisories/31885
third-party-advisory
-
securitytracker.com
/id?1020891
vdb-entry
-
secunia.com
/advisories/32080
third-party-advisory
- bugs.debian.org /cgi-bin/bugreport.cgi?bug=498678
-
secunia.com
/advisories/32181
third-party-advisory
-
openwall.com
/lists/oss-security/2024/07/01/3
mailing-list
Sources
- CVE List CVE-2008-4109
- NVD CVE-2008-4109
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.