CVE-2021-31878

An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 52%
VendorProductVersion
digiumasterisk
16.17.0
digiumasterisk
16.18.0
digiumasterisk
16.19.0
digiumasterisk
18.3.0
digiumasterisk
18.4.0
digiumasterisk
18.5.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
asterisk
bullseye
1:16.28.0~dfsg-0+deb11u4
fixed
bullseye (security)
1:16.28.0~dfsg-0+deb11u5
fixed
sid
1:22.0.0~dfsg+~cs6.14.60671435-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
asterisk
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
dne
Common Weakness Enumeration
References
http://downloads.asterisk.org/pub/security/AST-2021-007.html
http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html
http://seclists.org/fulldisclosure/2021/Jul/48
https://downloads.digium.com/pub/security/AST-2021-007.html
https://issues.asterisk.org/jira/browse/ASTERISK-29381
http://downloads.asterisk.org/pub/security/AST-2021-007.html
http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html
http://seclists.org/fulldisclosure/2021/Jul/48
https://downloads.digium.com/pub/security/AST-2021-007.html
https://issues.asterisk.org/jira/browse/ASTERISK-29381