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Improper Input Validation Affecting asterisk package, versions <1:13.18.5~dfsg-1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
92.87% (100th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-ASTERISK-429089
  • published27 Dec 2017
  • disclosed27 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 27 Dec 2017

CVE-2017-17850  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:unstable asterisk to version 1:13.18.5~dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and older, and 13.18-cert1 and older. A select set of SIP messages create a dialog in Asterisk. Those SIP messages must contain a contact header. For those messages, if the header was not present and the PJSIP channel driver was used, Asterisk would crash. The severity of this vulnerability is somewhat mitigated if authentication is enabled. If authentication is enabled, a user would have to first be authorized before reaching the crash point.