Input validation error in php (Alpine package)



Published: 2014-07-21
Risk Medium
Patch available YES
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 (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU32500

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-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

Install update from vendor's website.

Vulnerable software versions

php (Alpine package): 5.2.12-r0 - 5.5.15-r0

External links

http://git.alpinelinux.org/aports/commit/?id=e43d903639e7be758857809128fee4f9c3d6f95f
http://git.alpinelinux.org/aports/commit/?id=c185e52d06208049c6776f7e80cd0bc81bfbb1f2
http://git.alpinelinux.org/aports/commit/?id=1b61a767ec46a4a7eb1d76f2e4459de38eb97c28
http://git.alpinelinux.org/aports/commit/?id=eae47f6d919fafbbd2dd077106f5558a67e59a39
http://git.alpinelinux.org/aports/commit/?id=17ef6c9a8874eebd2fac041843bbb1f72bdb2585
http://git.alpinelinux.org/aports/commit/?id=1faa3f503104ad3e8cb9273cc73b15894e48c650


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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