CVE-2021-43845

ring: PJSIP is a free and open source multimedia communication library

CVE-2021-43845 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2021-43845, released December 27, 2021. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.1
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0389
90th percentile

PJSIP is a free and open source multimedia communication library. In version 2.11.1 and prior, if incoming RTCP XR message contain block, the data field is not checked against the received packet size, potentially resulting in an out-of-bound read access. This affects all users that use PJMEDIA and RTCP XR. A malicious actor can send a RTCP XR message with an invalid packet size.

Where it's fixed

ProductFixed inFixReleased
Linux
asterisk · Debian 14 1:18.12.0~dfsg+~cs6.12.40431413-1 DEBIAN-CVE-2021-43845 Dec 27, 2021
jami · Ubuntu 20.04 LTS (focal) 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 jami 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 Mar 14, 2023
jami-daemon · Ubuntu 20.04 LTS (focal) 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 jami-daemon 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 Mar 14, 2023
ring · Debian 12.15 (bookworm) 20230206.0~ds1-1 DEBIAN-CVE-2021-43845 Dec 27, 2021
ring · Ubuntu 18.04.6 LTS (bionic) 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 ring 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 Mar 14, 2023
ring · Ubuntu 20.04 LTS (focal) 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 ring 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 Mar 14, 2023
ring-daemon · Ubuntu 18.04.6 LTS (bionic) 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 ring-daemon 20180228.1.503da2b~ds1-1ubuntu0.1~esm1 Mar 14, 2023
ring-daemon · Ubuntu 20.04 LTS (focal) 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 ring-daemon 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1 Mar 14, 2023

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