Input validation error in PHP

1) Input validation error

EUVDB-ID: #VU32500

Risk: Medium

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

CVE-ID: CVE-2014-3538

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (CPU consumption) via a crafted file that triggers backtracking during processing of an awk rule.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

PHP: 5.0 - 5.6.40

CPE2.3

• cpe:2.3:a:php_group:php:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.1:*:*:*:*:*:*:*

External links

https://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
https://mx.gw.com/pipermail/file/2014/001553.html
https://openwall.com/lists/oss-security/2014/06/30/7
https://rhn.redhat.com/errata/RHSA-2014-1327.html
https://rhn.redhat.com/errata/RHSA-2014-1765.html
https://rhn.redhat.com/errata/RHSA-2014-1766.html
https://rhn.redhat.com/errata/RHSA-2016-0760.html
https://secunia.com/advisories/60696
https://www.debian.org/security/2014/dsa-3008
https://www.debian.org/security/2014/dsa-3021
https://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
https://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://www.securityfocus.com/bid/68348
https://bugzilla.redhat.com/show_bug.cgi?id=1098222
https://github.com/file/file/commit/4a284c89d6ef11aca34da65da7d673050a5ea320
https://github.com/file/file/commit/69a5a43b3b71f53b0577f41264a073f495799610
https://github.com/file/file/commit/71a8b6c0d758acb0f73e2e51421a711b5e9d6668
https://github.com/file/file/commit/74cafd7de9ec99a14f4480927580e501c8f852c3
https://github.com/file/file/commit/758e066df72fb1ac08d2eea91ddc3973d259e991
https://support.apple.com/HT204659

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.