Vulnerability Details CVE-2021-46837
res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.0%
CVSS Severity
CVSS v3 Score 6.5
References
- https://downloads.asterisk.org/pub/security/AST-2021-006.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://www.debian.org/security/2022/dsa-5285
- https://downloads.asterisk.org/pub/security/AST-2021-006.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://www.debian.org/security/2022/dsa-5285
Products affected by CVE-2021-46837
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cpe:2.3:a:asterisk:certified_asterisk:16.8.0
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cpe:2.3:a:digium:asterisk:16.0.0
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cpe:2.3:a:digium:asterisk:16.0.1
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cpe:2.3:a:digium:asterisk:16.1.0
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cpe:2.3:a:digium:asterisk:16.15.0
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cpe:2.3:a:digium:asterisk:16.15.1
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cpe:2.3:a:digium:asterisk:16.16.1
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cpe:2.3:a:digium:asterisk:16.2.0
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cpe:2.3:a:digium:asterisk:16.2.1
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cpe:2.3:a:digium:asterisk:16.3.0
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cpe:2.3:a:digium:asterisk:16.4.0
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cpe:2.3:a:digium:asterisk:16.4.1
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cpe:2.3:a:digium:asterisk:16.5.0
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cpe:2.3:a:digium:asterisk:16.5.1
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cpe:2.3:a:digium:asterisk:16.6.0
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cpe:2.3:a:digium:asterisk:16.6.1
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cpe:2.3:a:digium:asterisk:16.6.2
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cpe:2.3:a:digium:asterisk:17.0.0
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cpe:2.3:a:digium:asterisk:17.0.1
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cpe:2.3:a:digium:asterisk:17.1.0
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cpe:2.3:a:digium:asterisk:17.2.0
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cpe:2.3:a:digium:asterisk:17.3.0
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cpe:2.3:a:digium:asterisk:17.4.0
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cpe:2.3:a:digium:asterisk:17.5.0
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cpe:2.3:a:digium:asterisk:17.5.1
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cpe:2.3:a:digium:asterisk:17.6.0
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cpe:2.3:a:digium:asterisk:17.7.0
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cpe:2.3:a:digium:asterisk:17.7.7
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cpe:2.3:a:digium:asterisk:17.8.0
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cpe:2.3:a:digium:asterisk:17.8.1
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cpe:2.3:a:digium:asterisk:17.9.0
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cpe:2.3:a:digium:asterisk:17.9.1
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cpe:2.3:a:digium:asterisk:17.9.2
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cpe:2.3:a:digium:asterisk:18.0.0
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cpe:2.3:a:digium:asterisk:18.0.1
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cpe:2.3:a:digium:asterisk:18.1.0
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cpe:2.3:a:digium:asterisk:18.1.1
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cpe:2.3:a:digium:asterisk:18.2.0
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cpe:2.3:a:digium:asterisk:18.2.1
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:debian:debian_linux:9.0