CVE-2021-31878 — Reachable Assertion in Asterisk

CWE-617 — Reachable Assertion4 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 59.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Digium AsteriskDebian Asterisk
Timeline
PublishedJul 30
Latest updateMay 24

Description

An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶NVDdigium/asterisk6 versions+5

Patches

Patch: downloads.asterisk.org ↗Patch: packetstormsecurity.com ↗Patch: seclists.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-h6p9-w9r4-7x73: An issue was discovered in PJSIP in Asterisk before 16↗2022-05-24
▶
OSV
CVE-2021-31878: An issue was discovered in PJSIP in Asterisk before 16↗2021-07-30
▶

📋Vendor Advisories

1
Debian
CVE-2021-31878: asterisk - An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. T...↗2021
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CVE-2021-31878 — Reachable Assertion in Digium Asterisk | cvebase