Servers and applications
CVE-2013-4559
lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.
- Severity
- High 7.6
- Published
- 20 Nov 2013
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 1.4.33
- Exploit chance
- 11% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 12 Nov 2026
- Weakness
- CWE-264
- Attack
- Over the network · Only under certain conditions · No login needed
- Attacker can
- Read data · Change data · Take it down
- CVSS vector
AV:N/AC:H/Au:N/C:C/I:C/A:C- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
lighttpdServers and applications · cpe:a:lighttpd:lighttpd |
|