Medium severity · published Dec 5, 2022
CVE-2022-42705
A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of…
6.5
CVSS
1.3%
EPSS
No
On KEV
Description
A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Sangoma
16.0.0 before 16.29.1; 18.14.0 before 18.15.1; 19.6.0 before 19.7.1; 20.0.0 · source: NVD
CA
Certified Asterisk · Sangoma
18.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-42705
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-42705
Patch
https://downloads.asterisk.org/pub/security/AST-2022-008.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
www.debian.org
https://www.debian.org/security/2023/dsa-5358
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