CVE-2024-42491 - Design/Logic Flaw
CVE Information
Original CVE data
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.
Asterisk - (1)
Basic Analysis
Common vulnerability metrics
Design/Logic Flaw
Vulnerability weakness type is in the top 25 CWEs according to MITRE. View Mitre Top 25 CWEs
No exploit code is reported to exist.
Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog
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No sightings of the vulnerability within threat reports.
Cybersecurity Frameworks
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Compliance Impact
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Web Application Security Frameworks
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