CVE-2021-26717

Published: Feb 18, 2021Updated: Nov 21, 2024 Sources: CVE List NVDNVD-CWE-noinfo

7.5HIGH

NVD MITRE

Description

An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6. When re-negotiating for T.38, if the initial remote response was delayed just enough, Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream, then Asterisk would crash.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

NVD-CWE-noinfo

Affected Products

digium

commercial·USaka asterisk

and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

Official Patch Available

Is your org exposed to CVE-2021-26717?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

http://packetstormsecurity.com/files/161471/Asterisk-Project-Security-Advisory-AST-2021-002.html

packetstormsecurity.com

http://seclists.org/fulldisclosure/2021/Feb/58

seclists.org

https://downloads.asterisk.org/pub/security/

downloads.asterisk.org

and 2 more references View all →

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