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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
24cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*+ 19 more
- cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*range: <18.9
- cpe:2.3:a:sangoma:certified_asterisk:18.9:-:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1-rc1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert10:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert11:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert6:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert7:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert9:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:20.7:cert2:*:*:*:*:*:*
- Range: 18.9-cert12, 20.7-cert2
Patches
Vulnerability mechanics
References
7- github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4nvdPatch
- github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742nvdPatch
- github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2nvdPatch
- github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8nvdPatch
- github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0nvdPatch
- github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9nvdVendor Advisory
- lists.debian.org/debian-lts-announce/2024/10/msg00016.htmlnvd
News mentions
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