Security readout for executives and security teams
Plain-English summary
CVE-2022-24793 is a heap buffer overflow in PJSIP’s built-in DNS packet parsing. An unauthenticated network path can cause availability impact in applications using vulnerable PJSIP versions and its internal DNS resolver. Systems using an external resolver are reported as unaffected.
Executive priority
Prioritize remediation for internet-facing or high-availability communications services using PJSIP. The main documented impact is denial of service, not data theft, but disruption to voice or multimedia services can be operationally significant.
Technical view
PJSIP pjproject 2.12 and earlier can overflow heap memory while parsing DNS query records in parse_rr(). The CVSS vector indicates network reachability, low attack complexity, no privileges, no user interaction, and high availability impact. The issue is related to CVE-2023-27585 but occurs in a different parser function.
Likely exposure
Exposure is most likely in products, services, or appliances embedding pjproject <= 2.12 and relying on PJSIP DNS resolution. Packaged downstream software may carry fixed builds from distribution maintainers, so verify both embedded libraries and OS packages.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The advisory describes remote network impact against vulnerable DNS parsing, but exploit status is not established from the source bundle.
Researcher notes
The issue is CWE-120 in DNS packet parsing, specifically parse_rr(), and differs from CVE-2023-27585 in parse_query(). Source evidence supports affected pjproject <= 2.12, patch availability in upstream master, and documented workarounds. No source in the bundle confirms exploitation in the wild.
Mitigation direction
- Upgrade pjproject to a patched vendor or upstream-supported build.
- Apply relevant distribution security updates for pjproject or dependent packages.
- Disable PJSIP DNS resolution by setting nameserver_count to zero where appropriate.
- Use an external resolver instead of PJSIP internal DNS resolution.
- Check vendor guidance for bundled products that include pjproject.
Validation and detection
- Inventory applications and packages using PJSIP or pjproject.
- Confirm deployed versions are newer than 2.12 or vendor-patched.
- Review PJSIP configuration for internal DNS resolver usage.
- Verify external resolver use where claimed as a workaround.
- Check Debian, Gentoo, and application vendor advisories for fixed package versions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-24793 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4CVE reference
- https://github.com/pjsip/pjproject/commit/9fae8f43accef8ea65d4a8ae9cdf297c46cfe29aCVE reference
- [debian-lts-announce] 20220531 [SECURITY] [DLA 3036-1] pjproject security updateCVE reference · mailing-list
- GLSA-202210-37CVE reference · vendor-advisory
- [debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security updateCVE reference · mailing-list
- DSA-5285CVE reference · vendor-advisory
- [debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security updateCVE reference · mailing-list
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.