Vulnerability Details : 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 service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2022-42705
- cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:asterisk:20.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-42705
0.77%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 72 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-42705
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-04-24 |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2022-42705
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2022-42705
-
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
[SECURITY] [DLA 3335-1] asterisk security update
-
https://www.debian.org/security/2023/dsa-5358
Debian -- Security Information -- DSA-5358-1 asterisk
-
https://downloads.asterisk.org/pub/security/AST-2022-008.html
AST-2022-008Patch;Vendor Advisory
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