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 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
GitHub_MCNA
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 32%
VendorProductVersion
teluupjsip
𝑥
≤ 2.11.1
debiandebian_linux
9.0
debiandebian_linux
10.0
debiandebian_linux
11.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
asterisk
bullseye
1:16.28.0~dfsg-0+deb11u4
fixed
stretch
not-affected
bullseye (security)
1:16.28.0~dfsg-0+deb11u5
fixed
sid
1:22.0.0~dfsg+~cs6.14.60671435-1
fixed
ring
bullseye
vulnerable
stretch
not-affected
bullseye (security)
20210112.2.b757bac~ds1-1+deb11u1
fixed
bookworm
20230206.0~ds2-1.1
fixed
sid
20231201.0~ds1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
asterisk
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
ignored
pjproject
bionic
needs-triage
xenial
needs-triage
trusty
ignored
ring
noble
dne
mantic
not-affected
lunar
not-affected
impish
ignored
focal
Fixed 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
released
bionic
Fixed 20180228.1.503da2b~ds1-1ubuntu0.1~esm1
released
xenial
ignored
trusty
ignored