Input validation error in PHP



Published: 2014-07-03 | Updated: 2020-07-28
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2014-3538
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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PHP
Universal components / Libraries / Scripting languages

Vendor PHP Group

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU32500

Risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:C]

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

External links

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



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