CVE-2021-26713
- Source
- https://cve.org/CVERecord?id=CVE-2021-26713
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26713.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-26713
- Downstream
- Published
- 2021-02-19T20:15:13Z
- Modified
- 2026-10-24T10:30:48Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch.
- References
Affected packages
Git / github.com/asterisk/asterisk
Affected ranges
- Type
- GIT
- Repo
- https://github.com/asterisk/asterisk
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "range": [ { "introduced": "16.0.0" }, { "fixed": "16.16.1" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "range": [ { "introduced": "17.0.0" }, { "fixed": "17.9.2" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*", "range": [ { "introduced": "18.0.0" }, { "fixed": "18.2.1" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:*", "range": [ { "introduced": "16.8-NA" }, { "last_affected": "16.8-NA" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert1\\-rc1" }, { "last_affected": "16.8-cert1\\-rc1" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert1\\-rc2" }, { "last_affected": "16.8-cert1\\-rc2" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert1\\-rc3" }, { "last_affected": "16.8-cert1\\-rc3" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert1\\-rc4" }, { "last_affected": "16.8-cert1\\-rc4" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert2" }, { "last_affected": "16.8-cert2" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert3" }, { "last_affected": "16.8-cert3" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert4" }, { "last_affected": "16.8-cert4" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert4\\-rc1" }, { "last_affected": "16.8-cert4\\-rc1" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert4\\-rc2" }, { "last_affected": "16.8-cert4\\-rc2" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert4\\-rc3" }, { "last_affected": "16.8-cert4\\-rc3" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert4\\-rc4" }, { "last_affected": "16.8-cert4\\-rc4" } ], "source": "CPE_STRING" }, { "cpe": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*", "range": [ { "introduced": "16.8-cert5" }, { "last_affected": "16.8-cert5" } ], "source": "CPE_STRING" } ] }
Affected versions
16.*
16.8-NA
16.8-cert1\-rc1
16.8-cert1\-rc2
16.8-cert1\-rc3
16.8-cert1\-rc4
16.8-cert2
16.8-cert3
16.8-cert4
16.8-cert4\-rc1
16.8-cert4\-rc2
16.8-cert4\-rc3
16.8-cert4\-rc4
16.8-cert5
16.8.0
certified/16.*
certified/16.8-cert1
certified/16.8-cert1-rc1
certified/16.8-cert1-rc2
certified/16.8-cert1-rc3
certified/16.8-cert1-rc4
certified/16.8-cert1-rc5
certified/16.8-cert2
certified/16.8-cert3
certified/16.8-cert4
certified/16.8-cert4-rc1
certified/16.8-cert4-rc2
certified/16.8-cert4-rc3
certified/16.8-cert4-rc4
certified/16.8-cert5