CVE-2006-1991 json
The substr_compare function in string.c in PHP 5.1.2 allows context-dependent attackers to cause a denial of service (memory access violati…
published 2006-04-24 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1991
- cvss
- 6.4
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
The substr_compare function in string.c in PHP 5.1.2 allows context-dependent attackers to cause a denial of service (memory access violation) via an out-of-bounds offset argument.
Patch / fix
- php7 openSUSE Tumbleweed 7.4.24-1.1
- php8 openSUSE Tumbleweed 8.0.11-1.1
opensuse advisories openSUSE-SU-2024:11167-1openSUSE-SU-2024:11169-1
- secunia.com/advisories/20269 advisory
Exploit prediction
2.24% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- infigo.hr http://www.infigo.hr/en/in_focus/advisories/INFIGO-2006-04-02 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
Classification
- Weakness
-
- CWE-399 Resource Management Errors
- Technology feeds
References
-
secunia.com
/advisories/20269
third-party-advisory, patch, vendor-advisory
-
infigo.hr
/en/in_focus/advisories/INFIGO-2006-04-02
exploit
-
novell.com
/linux/security/advisories/2006_31_php.html
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2006:091
vendor-advisory
-
security.gentoo.org
/glsa/glsa-200605-08.xml
vendor-advisory
-
ubuntu.com
/usn/usn-320-1
vendor-advisory
-
secunia.com
/advisories/20676
third-party-advisory, vendor-advisory
-
secunia.com
/advisories/21125
third-party-advisory, vendor-advisory
-
vupen.com
/english/advisories/2006/1500
vdb-entry, vendor-advisory
-
secunia.com
/advisories/20052
third-party-advisory, vendor-advisory
-
securitytracker.com
/id?1015979
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/26003
vdb-entry
Sources
- CVE List CVE-2006-1991
- NVD CVE-2006-1991
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.