#VU45157 Link following in PHP - CVE-2011-0441

Vulnerability identifier: #VU45157

Vulnerability risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2011-0441

CWE-ID: CWE-59

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 #BASIC_IMPACT#.

The Debian GNU/Linux /etc/cron.d/php5 cron job for PHP 5.3.5 allows local users to delete arbitrary files via a symlink attack on a directory under /var/lib/php5/.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 5.3.5

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External links
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=618489
https://git.debian.org/?p=pkg-php/php.git;a=commit;h=d09fd04ed7bfcf7f008360c6a42025108925df09
https://www.mandriva.com/security/advisories?name=MDVSA-2011:069
https://www.securityfocus.com/bid/46928
https://www.vupen.com/english/advisories/2011/0910
https://exchange.xforce.ibmcloud.com/vulnerabilities/66180

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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.