CVE-2024-42491

Description

Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations.

Reserved 2024-08-02 | Published 2024-09-05 | Updated 2024-09-05 | Assigner GitHub_M

Problem types

CWE-252: Unchecked Return Value

CWE-476: NULL Pointer Dereference

Product status

< 18.24.3
affected

>= 19.0.0, < 20.9.3
affected

>= 21.0.0, < 21.4.3
affected

< 18.9-cert12
affected

>= 19.0, < 20.7-cert2
affected

References

github.com/...terisk/security/advisories/GHSA-v428-g3cw-7hv9

github.com/...ommit/42a2f4ccfa2c7062a15063e765916b3332e34cc4

github.com/...ommit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742

github.com/...ommit/50bf8d4d3064930d28ecf1ce3397b14574d514d2

github.com/...ommit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8

github.com/...ommit/a15050650abf09c10a3c135fab148220cd41d3a0

cve.org (CVE-2024-42491)

nvd.nist.gov (CVE-2024-42491)

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