CVE-2024-42491 — Unchecked Return Value in Asterisk

CWE-252 — Unchecked Return ValueCWE-476 — NULL Pointer Dereference6 documents4 sources
Severity
5.7MEDIUMNVD
EPSS
1.0%
top 23.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
AsteriskSangoma AsteriskSangoma Certified Asterisk+1 more
Timeline
PublishedSep 5

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 work…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:HExploitability: 2.1 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/asterisk< asterisk 1:16.28.0~dfsg-0+deb11u5 (bullseye)
▶NVDsangoma/asterisk20.0.0 — 20.9.3+2
▶CVEListV5asterisk/asterisk< 18.24.3+4
▶Debianasterisk/asterisk< 1:16.28.0~dfsg-0+deb11u5

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

1
OSV
CVE-2024-42491: Asterisk is an open-source private branch exchange (PBX)↗2024-09-05
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📋Vendor Advisories

1
Debian
CVE-2024-42491: asterisk - Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.2...↗2024
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💬Community

3
Bugzilla
CVE-2024-42491 asterisk: A malformed Contact or Record-Route URI in an incoming SIP request can cause crash [fedora-39]↗2024-09-05
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Bugzilla
CVE-2024-42491 asterisk: A malformed Contact or Record-Route URI in an incoming SIP request can cause crash [fedora-40]↗2024-09-05
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Bugzilla
CVE-2024-42491 asterisk: A malformed Contact or Record-Route URI in an incoming SIP request can cause crash [epel-8]↗2024-09-05
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CVE-2024-42491 — Unchecked Return Value in Asterisk | cvebase