CVE-2018-17281
Description
There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.
Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
EPSS
Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
- Score
- 0.52449 (52.4% probability)
- Percentile
- 99.0%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
References
Links listed in the CVE record. They lead to other sites, which CubePath does not control.
- 1041694 (securitytracker.com)vdb-entry
- 20180920 AST-2018-009: Remote crash vulnerability in HTTP websocket upgrade (seclists.org)mailing-list
- packetstormsecurity.com/files/149453/Asterisk-Project-Secur…
- DSA-4320 (debian.org)vendor-advisory
- 20180920 AST-2018-009: Remote crash vulnerability in HTTP websocket upgrade (seclists.org)mailing-list
- issues.asterisk.org/jira/browse/ASTERISK-28013
- [debian-lts-announce] 20180927 [SECURITY] [DLA 1523-1] asterisk security update (lists.debian.org)mailing-list
- GLSA-201811-11 (security.gentoo.org)vendor-advisory
- 105389 (securityfocus.com)vdb-entry
- downloads.asterisk.org/pub/security/AST-2018-009.html
Timeline
- ID reserved
- Record published
- Record last updated
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About CubePath
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:48 UTC. Sources and licenses