High severity · published Apr 15, 2022
CVE-2022-26498
An issue was discovered in Asterisk through 19.x
7.5
CVSS
16.5%
EPSS
No
On KEV
Description
An issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it is possible to download files that are not certificates. These files could be much larger than what one would expect to download, leading to Resource Exhaustion. This is fixed in 16.25.2, 18.11.2, and 19.3.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)16.5% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
16.15.0 through 16.25.1; 18.0 before 18.11.2; 19.0.0 through 19.3.1 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-26498
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-26498
Patch
http://packetstormsecurity.com/files/166744/Asterisk-Project-Security-Advisory-AST-2022-001.html
packetstormsecurity.com
http://packetstormsecurity.com/files/172139/Shannon-Baseband-chatroom-SDP-Attribute-Memory-Corruption.html
Vendor Advisory
https://downloads.asterisk.org/pub/security/
Patch
https://downloads.asterisk.org/pub/security/AST-2022-001.html
Mailing List
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
Third Party Advisory
https://www.debian.org/security/2022/dsa-5285
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