CVE-2007-4661
The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers, which has unknown attack vectors and impact, possibly resulting in…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers, which has unknown attack vectors and impact, possibly resulting in a heap-based buffer overflow. NOTE: this is due to an incomplete fix for CVE-2007-2872.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 2.36% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-399
- Affected
- php/php
- Source
- cve@mitre.org
References
- http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.58&r2=1.445.2.14.2.59Exploit
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
- http://secunia.com/advisories/26642Patch
- http://secunia.com/advisories/26838
- http://secunia.com/advisories/27102
- http://secunia.com/advisories/27864
- http://secunia.com/advisories/28658
- http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
- http://www.php.net/ChangeLog-5.php#5.2.4
- http://www.php.net/releases/5_2_4.phpPatch
- http://www.ubuntu.com/usn/usn-549-2
- https://issues.rpath.com/browse/RPL-1702
- https://launchpad.net/bugs/173043
- https://usn.ubuntu.com/549-1/
- http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.58&r2=1.445.2.14.2.59Exploit
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
- http://secunia.com/advisories/26642Patch
- http://secunia.com/advisories/26838
- http://secunia.com/advisories/27102
- http://secunia.com/advisories/27864
- http://secunia.com/advisories/28658
- http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
- http://www.php.net/ChangeLog-5.php#5.2.4
- http://www.php.net/releases/5_2_4.phpPatch
- http://www.ubuntu.com/usn/usn-549-2
- https://issues.rpath.com/browse/RPL-1702
- https://launchpad.net/bugs/173043
- https://usn.ubuntu.com/549-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.