Input validation error in asterisk (Alpine package)

1) Input validation error

EUVDB-ID: #VU32569

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-2287

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to perform service disruption.

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.26.1, 11.8.x before 11.8.1, and 12.1.x before 12.1.1, and Certified Asterisk 1.8.15 before 1.8.15-cert5 and 11.6 before 11.6-cert2, when chan_sip has a certain configuration, allows remote authenticated users to cause a denial of service (channel and file descriptor consumption) via an INVITE request with a (1) Session-Expires or (2) Min-SE header with a malformed or invalid value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

asterisk (Alpine package): 1.8.15.1-r0 - 11.6.1-r0

CPE2.3

• cpe:2.3:o:alpine:asterisk_alpine_package:1.8.15.1-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:asterisk_alpine_package:11.6.1-r0:*:*:*:*:alpine_linux:*:2.6

External links

https://git.alpinelinux.org/aports/commit/?id=20c40ae055d91d07f56ad2073dcf3b773e9bb3fd

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.