UBUNTU-CVE-2021-43804

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Source
https://ubuntu.com/security/CVE-2021-43804
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43804.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-43804
Upstream
Downstream
Related
Published
2021-12-22T18:15:00Z
Modified
2025-09-08T16:47:25Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / pjproject

Package

Name
pjproject
Purl
pkg:deb/ubuntu/pjproject@2.1.0.0.ast20130823-1+deb8u1build0.16.04.1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.1.0.0.ast20130823-1
2.1.0.0.ast20130823-1+deb8u1build0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpj2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjlib-util2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjmedia-audiodev2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjmedia-codec2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjmedia-videodev2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjmedia2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjnath2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjproject-dev",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjsip-simple2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjsip-ua2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjsip2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        },
        {
            "binary_name": "libpjsua2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / pjproject

Package

Name
pjproject
Purl
pkg:deb/ubuntu/pjproject@2.7.2~dfsg-1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6~dfsg-2
2.7~dfsg-1
2.7.1~dfsg-1
2.7.1~dfsg-1build1
2.7.2~dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpj2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjlib-util2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjmedia-audiodev2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjmedia-codec2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjmedia-videodev2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjmedia2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjnath2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjproject-dev",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjsip-simple2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjsip-ua2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjsip2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjsua2",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "libpjsua2-2v5",
            "binary_version": "2.7.2~dfsg-1"
        },
        {
            "binary_name": "python-pjproject",
            "binary_version": "2.7.2~dfsg-1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / ring

Package

Name
ring
Purl
pkg:deb/ubuntu/ring@20180228.1.503da2b~ds1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20180228.1.503da2b~ds1-1ubuntu0.1~esm1

Affected versions

20170803.*

20170803.2.5fcfe3f~dfsg1-1

20171024.*

20171024.1.eadbdeb~ds1-1

20171129.*

20171129.2.cf5bbff~ds1-1
20171129.2.cf5bbff~ds1-2

20180119.*

20180119.1.9e06f94~ds1-1
20180119.1.9e06f94~ds1-3

20180222.*

20180222.1.7bffde2~ds2-2

20180228.*

20180228.1.503da2b~ds1-1
20180228.1.503da2b~ds1-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ring",
            "binary_version": "20180228.1.503da2b~ds1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "ring-daemon",
            "binary_version": "20180228.1.503da2b~ds1-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:20.04:LTS / ring

Package

Name
ring
Purl
pkg:deb/ubuntu/ring@20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1

Affected versions

20190215.*

20190215.1.f152c98~ds1-1
20190215.1.f152c98~ds1-1build1
20190215.1.f152c98~ds1-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "jami",
            "binary_version": "20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1"
        },
        {
            "binary_name": "jami-daemon",
            "binary_version": "20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1"
        },
        {
            "binary_name": "ring",
            "binary_version": "20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1"
        },
        {
            "binary_name": "ring-daemon",
            "binary_version": "20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1"
        }
    ],
    "availability": "No subscription required"
}