CVE-2020-28327
Summary
| CVE | CVE-2020-28327 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2020-11-06 19:15:00 UTC |
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| Updated | 2020-11-20 18:07:00 UTC |
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| Description | A res_pjsip_session crash was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1. and Certified Asterisk before 16.8-cert5. Upon receiving a new SIP Invite, Asterisk did not return the created dialog locked or referenced. This caused a gap between the creation of the dialog object, and its next use by the thread that created it. Depending on some off-nominal circumstances and timing, it was possible for another thread to free said dialog in this gap. Asterisk could then crash when the dialog object, or any of its dependent objects, were dereferenced or accessed next by the initial-creation thread. Note, however, that this crash can only occur when using a connection-oriented protocol (e.g., TCP or TLS, but not UDP) for SIP transport. Also, the remote client must be authenticated, or Asterisk must be configured for anonymous calling. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
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| [ASTERISK-29057] pjsip: Crash on call rejection during high load - Digium/Asterisk JIRA |
MISC |
issues.asterisk.org |
Exploit, Issue Tracking, Vendor Advisory |
| AST-2020-001 |
MISC |
downloads.asterisk.org |
Patch, Vendor Advisory |
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 500033 Alpine Linux Security Update for asterisk
- 501357 Alpine Linux Security Update for asterisk
- 503865 Alpine Linux Security Update for asterisk
