DEBIAN-CVE-2021-37706

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2021-37706
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-37706.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-37706
Upstream
Published
2021-12-22T18:15:07Z
Modified
2025-09-19T07:31:43.633451Z
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 STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.

References

Affected packages

Debian:11 / asterisk

Package

Name
asterisk
Purl
pkg:deb/debian/asterisk?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:16.28.0~dfsg-0+deb11u1

Affected versions

1:16.*

1:16.16.1~dfsg-1
1:16.16.1~dfsg-1+deb11u1~bpo10+1
1:16.16.1~dfsg-1+deb11u1
1:16.16.1~dfsg-2
1:16.16.1~dfsg-3
1:16.16.1~dfsg-4
1:16.16.1~dfsg+~2.10-1
1:16.16.1~dfsg+~2.10-2
1:16.23.0~dfsg+~2.10-1
1:16.23.0~dfsg+~cs6.10.20220309-1
1:16.23.0~dfsg+~cs6.10.20220309-2
1:16.23.0~dfsg+~cs6.10.40431411-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / ring

Package

Name
ring
Purl
pkg:deb/debian/ring?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20210112.2.b757bac~ds1-1+deb11u1

Affected versions

20210112.*

20210112.2.b757bac~ds1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / ring

Package

Name
ring
Purl
pkg:deb/debian/ring?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20230206.0~ds1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}