cbcvebase.
CVE-2021-43845
published 2021-12-27

CVE-2021-43845: 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…

PriorityP352critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
3.72%
88.4th 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.

Affected

7 ranges
VendorProductVersion rangeFixed in
debianasterisk< asterisk 1:16.28.0~dfsg-0+deb11u1 (bullseye)asterisk 1:16.28.0~dfsg-0+deb11u1 (bullseye)
debiandebian_linux
debiandebian_linux
debiandebian_linux
debianring< asterisk 1:16.28.0~dfsg-0+deb11u1 (bullseye)asterisk 1:16.28.0~dfsg-0+deb11u1 (bullseye)
pjsippjproject<= 2.11.1
teluupjsip<= 2.11.1

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
nvdv2.06.4MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:P
osv9.8CRITICAL
vendor_debian8.2HIGH
vendor_ubuntu7.3HIGH
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