Resource management error in asterisk (Alpine package)

1) Resource management error

EUVDB-ID: #VU32780

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-2012-3863

CWE-ID: CWE-399 - Resource Management Errors

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 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.

Mitigation

Install update from vendor's website.

Vulnerable software versions

asterisk (Alpine package): 1.8.8.0-r0 - 1.8.13.0-r0

CPE2.3

• cpe:2.3:o:alpine:asterisk_alpine_package:1.8.8.0-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:asterisk_alpine_package:1.8.10.1-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:asterisk_alpine_package:1.8.11.0-r0:*:*:*:*:alpine_linux:*:2.3

External links

https://git.alpinelinux.org/aports/commit/?id=5f23dd2de673240a2657b40fbb161d33896bb71b
https://git.alpinelinux.org/aports/commit/?id=beb0746876b6e6f3ec7158f1b4ea608170a5c820
https://git.alpinelinux.org/aports/commit/?id=afb614ea0cec6c3129ff5053fc125034241db972

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.