CVE-2021-21375
MEDIUM6.5EPSS 1.1%ring - security update
Published: 3/10/2021Modified: 12/3/2025
Also known as:ALPINE-CVE-2021-21375
Description
PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.
Affected packages (4)
- Alpine/pjprojectfrom 0, < 2.11-r0
- Debian/pjprojectfrom 0, < 2.5.5~dfsg-6+deb9u2
- Debian/ringfrom 0, < 20210112.2.b757bac~ds1-1
- Debian/ringfrom 0, < 20161221.2.7bd7d91~dfsg1-1+deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |