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CVE-2007-4661

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice 549-2
Posted Dec 4, 2007
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 549-2 - USN-549-1 fixed vulnerabilities in PHP. However, some upstream changes were incomplete, which caused crashes in certain situations with Ubuntu 7.10.

tags | advisory, php, vulnerability
systems | linux, ubuntu
advisories | CVE-2007-1285, CVE-2007-2872, CVE-2007-3799, CVE-2007-3998, CVE-2007-4657, CVE-2007-4658, CVE-2007-4660, CVE-2007-4661, CVE-2007-4662, CVE-2007-4670, CVE-2007-5898, CVE-2007-5899
SHA-256 | 9a0a4a1d82e27e9d74bb5eb17c3168dc8ab295a00a313b9b1b95a786a5cb345f
Ubuntu Security Notice 549-1
Posted Nov 30, 2007
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 549-1 - Various integer overflows, arbitrary code execution, and denial of service vulnerabilities have been fixed in PHP 5.

tags | advisory, denial of service, overflow, arbitrary, php, vulnerability, code execution
systems | linux, ubuntu
advisories | CVE-2007-1285, CVE-2007-2872, CVE-2007-3799, CVE-2007-3998, CVE-2007-4657, CVE-2007-4658, CVE-2007-4660, CVE-2007-4661, CVE-2007-4662, CVE-2007-4670, CVE-2007-5898, CVE-2007-5899
SHA-256 | 82dae6b629e189b7e2d3dfbad033c409a70c0f0886d117b786a64d4164df2e82
Gentoo Linux Security Advisory 200710-2
Posted Oct 9, 2007
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200710-02 - Several vulnerabilities were found in PHP. Mattias Bengtsson and Philip Olausson reported integer overflows in the gdImageCreate() and gdImageCreateTrueColor() functions of the GD library which can cause heap-based buffer overflows. Gerhard Wagner discovered an integer overflow in the chunk_split() function that can lead to a heap-based buffer overflow. Its incomplete fix caused incorrect buffer size calculation due to precision loss, also resulting in a possible heap-based buffer overflow. A buffer overflow in the sqlite_decode_binary() of the SQLite extension found by Stefan Esser that was addressed in PHP 5.2.1 was not fixed correctly. Versions less than 5.2.4_p20070914-r2 are affected.

tags | advisory, overflow, php, vulnerability
systems | linux, gentoo
advisories | CVE-2007-1883, CVE-2007-1887, CVE-2007-1900, CVE-2007-2756, CVE-2007-2872, CVE-2007-3007, CVE-2007-3378, CVE-2007-3806, CVE-2007-3996, CVE-2007-3997, CVE-2007-3998, CVE-2007-4652, CVE-2007-4657, CVE-2007-4658, CVE-2007-4659, CVE-2007-4660, CVE-2007-4661, CVE-2007-4662
SHA-256 | 0954c820cef174c83409c66ee739a3d9955c800b776a51d4b17c9452a9f19875
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