CVE-2022-26498
HIGHCVSS 7.5/10EPSS 15.55%
Last modified
CVE-2022-26498 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it is possible to download files that are not certificates. EPSS estimates a 15.55% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Digium | Asterisk | >= 16.15.0, <= 16.25.1 |
| Digium | Asterisk | >= 18.0, < 18.11.2 |
| Digium | Asterisk | >= 19.0.0, <= 19.3.1 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
References
- http://packetstormsecurity.com/files/166744/Asterisk-Project-Security-Advisory-AST-2022-001.htmlPatch, Third Party Advisory, VDB Entry
- https://downloads.asterisk.org/pub/security/Vendor Advisory
- https://downloads.asterisk.org/pub/security/AST-2022-001.htmlPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
- http://packetstormsecurity.com/files/166744/Asterisk-Project-Security-Advisory-AST-2022-001.htmlPatch, Third Party Advisory, VDB Entry
- https://downloads.asterisk.org/pub/security/Vendor Advisory
- https://downloads.asterisk.org/pub/security/AST-2022-001.htmlPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-26498?
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.
How severe is CVE-2022-26498?
CVE-2022-26498 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 15.55% probability of exploitation in the next 30 days.
How do I fix CVE-2022-26498?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2022-26498?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST