Asterisk: CVE-2022-37325 fix is absent from current chan_ooh323 Q.931 party-number parser
CVSS score
7.5
EPSS probability
—
Risk score
0.8
Published
2 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%55
Short explanation
The chan_ooh323 Q.931 party-number parser in Asterisk lacks the fix introduced in CVE-2022-37325. This omission allows malformed Q.931 elements within OOH323 requests to crash Asterisk.
This vulnerability enables remote attackers to execute denial of service (DoS) attacks without authentication, causing unexpected termination of the targeted Asterisk telephony service.
What should be done?
- Upgrade to Asterisk versions 21.12.3, 22.10.1, 23.4.1 or Certified Asterisk 22.8-cert3
- Follow instructions provided in the vendor advisory
- Restrict external network access to the chan_ooh323 channel driver port
Chain of evidence and sources
chan_ooh323 Q.931 parti numarası ayrıştırıcısı CVE-2022-37325 düzeltmesini barındırmamaktadır.
Hatalı biçimlendirilmiş Q.931 öğelerine sahip OOH323 istekleri Asterisk yazılımını çökletebilir.
Zafiyet chan_ooh323 eklentisinin açık portlar üzerinden erişilebilir olmasını gerektirir.
İlgili sorun Asterisk 21.12.3, 22.10.1, 23.4.1 ve Certified Asterisk 22.8-cert3 sürümlerinde giderilmiştir.
Show the technical text from the sources
Asterisk is an open source private branch exchange and telephony toolkit. From 21.0.0-pre1 until Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3, the `chan_ooh323` `Q.931 party-number parser` lacks the `CVE-2022-37325` fix because that fix was never forward-ported from Asterisk 20 to later versions. Malformed Q.931 elements in an `OOH323 request` can therefore crash Asterisk. This issue affects Asterisk versions greater than 20. The `chan_ooh323` addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-839
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.5 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVE CNA |
| 7.5 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-57186 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-57186 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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