Buffer overflow in php (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU16096

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2014-3597

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to multiple buffer overflows in the php_parserr function in ext/standard/dns.c in PHP before 5.4.32 and 5.5.x before 5.5.16. A remote attacker can trigger memory corruption via a crafted DNS record, related to the dns_get_record function and the dn_expand function and cause the service to crash or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

php (Alpine package): 5.5.14-r0 - 5.5.15-r0

CPE2.3

• cpe:2.3:a:alpine:php_alpine_package:5.5.14-r0:*:*:*:*:alpine_linux:*:2.6
• cpe:2.3:a:alpine:php_alpine_package:5.5.15-r0:*:*:*:*:alpine_linux:*:2.7

External links

https://git.alpinelinux.org/aports/commit/?id=e43d903639e7be758857809128fee4f9c3d6f95f
https://git.alpinelinux.org/aports/commit/?id=c185e52d06208049c6776f7e80cd0bc81bfbb1f2

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.