Improper Input Validation Affecting asterisk package, versions <14.7.5-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-ALPINE36-ASTERISK-467651
- published22 Sept 2019
- disclosed22 Sept 2019
- creditUnknown
Introduced: 22 Sep 2019
CVE-2017-17850 (opens in a new tab)How to fix?
Upgrade Alpine:3.6 asterisk to version 14.7.5-r0 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 Alpine.
See How to fix? for Alpine:3.6 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.