CVE catalog
CVE-2021-43804
ring: CVE-2021-43804
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.29% · Oct 25, 2026
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 affected versions if the incoming RTCP BYE message contains a reason's length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. There are no known workarounds.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ring | bookworm | 20230206.0~ds2-1.1+deb12u1 | fixed |
| Debian | ring | bookworm-security | 20230206.0~ds2-1.1+deb12u1 | fixed |
| Alpine | pjproject | 3.16 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.17 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.18 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.19 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.20 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.21 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.22 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.23 | 2.12-r0 | fixed |
| Alpine | pjproject | 3.24 | 2.12-r0 | fixed |
| Ubuntu | pjproject | pro | 2.6~dfsg-2 | vulnerable |
| Ubuntu | pjproject | pro | 2.7~dfsg-1 | vulnerable |
| Ubuntu | pjproject | pro | 2.7.1~dfsg-1 | vulnerable |
| Ubuntu | pjproject | pro | 2.7.1~dfsg-1build1 | vulnerable |
| Ubuntu | pjproject | pro | 2.7.2~dfsg-1 | vulnerable |
| Ubuntu | pjproject | pro | 2.7.2~dfsg-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | ring | pro | 20170803.2.5fcfe3f~dfsg1-1 | vulnerable |
| Ubuntu | ring | pro | 20171024.1.eadbdeb~ds1-1 | vulnerable |
| Ubuntu | ring | pro | 20171129.2.cf5bbff~ds1-1 | vulnerable |
| Ubuntu | ring | pro | 20171129.2.cf5bbff~ds1-2 | vulnerable |
| Ubuntu | ring | pro | 20180119.1.9e06f94~ds1-1 | vulnerable |
| Ubuntu | ring | pro | 20180119.1.9e06f94~ds1-3 | vulnerable |
| Ubuntu | ring | pro | 20180222.1.7bffde2~ds2-2 | vulnerable |
| Ubuntu | ring | pro | 20180228.1.503da2b~ds1-1 | vulnerable |
| Ubuntu | ring | pro | 20180228.1.503da2b~ds1-1build1 | vulnerable |
| Ubuntu | ring | pro | 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 | fixed |
| Ubuntu | ring | 20.04 | 20190215.1.f152c98~ds1-1 | vulnerable |
| Ubuntu | ring | 20.04 | 20190215.1.f152c98~ds1-1build1 | vulnerable |
| Ubuntu | ring | 20.04 | 20190215.1.f152c98~ds1-1build2 | vulnerable |
| Ubuntu | ring | 20.04 | 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ring | source | bookworm | 20230206.0~ds1-1 | not yet assigned | Not reported | [1014998] |
| Alpine | pjproject | apk | 3.16 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.17 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.18 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.19 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.20 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.21 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.22 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.23 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Alpine | pjproject | apk | 3.24 | 2.12-r0 | Not reported | ALPINE-CVE-2021-43804 | Not reported |
| Ubuntu | ring | deb | pro | 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2021-43804 | Not reported |
| Ubuntu | ring | deb | 20.04 | 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 | Not reported | UBUNTU-CVE-2021-43804 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [jami]Fixed
Source package: [ring]
Details (4)
20230206.0~ds2-1.1+deb12u1· amd64 · bookwormFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· arm64 · bookwormFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
- [jami-daemon]Fixed
Source package: [ring]
Details (4)
20230206.0~ds2-1.1+deb12u1· amd64 · bookwormFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· arm64 · bookwormFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
20230206.0~ds2-1.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
20230206.0~ds1-1dsa · ring · debian · bookworm; dsa · ring · debian · 12
Observed: