Vulnerability identifier: #VU42772

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-4635

CWE-ID: CWE-20

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 perform service disruption.

Integer overflow in the SdnToJewish function in jewish.c in the Calendar component in PHP before 5.3.26 and 5.4.x before 5.4.16 allows context-dependent attackers to cause a denial of service (application hang) via a large argument to the jdtojewish function.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 3.0 - 3.0.18, 4.0 - 4.0.7, 4.1.0 - 4.1.2, 4.2.0 - 4.2.3, 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.24, 5.4.0 - 5.4.15

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External links
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00007.html
http://secunia.com/advisories/54104
http://www.attrition.org/pipermail/vim/2013-June/002697.html
http://www.php.net/ChangeLog-5.php
http://www.securitytracker.com/id/1028699
http://www.ubuntu.com/usn/USN-1905-1
http://bugs.php.net/bug.php?id=64895

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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.