Missing Authorization Affecting asterisk package, versions <1:16.10.0~dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.33% (71st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-ASTERISK-535464
  • published23 Nov 2019
  • disclosed22 Nov 2019

Introduced: 22 Nov 2019

CVE-2019-18790  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Debian:unstable asterisk to version 1:16.10.0~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 channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.

CVSS Scores

version 3.1