#VU110305 Information disclosure in PHP - CVE-2010-1862

Vulnerability identifier: #VU110305

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2010-1862

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The chunk_split function in PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allows context-dependent attackers to obtain sensitive information (memory contents) by causing a userspace interruption of an internal function, related to the call time pass by reference feature.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 5.2, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.8, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.3, 5.3.1, 5.3.2

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External links
https://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00000.html
https://marc.info/?l=bugtraq&m=133469208622507&w=2
https://php-security.org/2010/05/04/mops-2010-008-php-chunk_split-interruption-information-leak-vulnerability/index.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.