HIGH
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
Published Sep 24, 2018
7.5
HIGHCVSS 3.0
EPSS 52.45%
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.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 13.1
- 13.1
- 13.1
- 13.1
- 13.1
- 13.1
- 13.8
- 13.8
- 13.8
- 13.8
- 13.13
- 13.13
- 13.13
- 13.13
- 13.13
- 13.13
- 13.13
- 13.13
- 13.13
- 13.21
- 13.21
Configuration 3
OR
- 8.0
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
52.45% 0.52449
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.52449
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (31 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 52.45% (0.52449) | 98.93th | v5 (v2026.06.15) |
| Sep 22, 2026 | 53.38% (0.53381) | 98.94th | v5 (v2026.06.15) |
| Sep 21, 2026 | 49.33% (0.49326) | 98.87th | v5 (v2026.06.15) |
| Sep 6, 2026 | 53.38% (0.53381) | 98.91th | v5 (v2026.06.15) |
| Sep 5, 2026 | 49.33% (0.49326) | 98.84th | v5 (v2026.06.15) |
| Aug 30, 2026 | 53.38% (0.53381) | 98.91th | v5 (v2026.06.15) |
| Aug 28, 2026 | 49.33% (0.49326) | 98.84th | v5 (v2026.06.15) |
| Aug 24, 2026 | 53.38% (0.53381) | 98.90th | v5 (v2026.06.15) |
| Aug 23, 2026 | 49.33% (0.49326) | 98.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 53.38% (0.53381) | 98.85th | v5 (v2026.06.15) |
| Nov 21, 2025 | 80.65% (0.80646) | 99.08th | v4 (v2025.03.14) |
| Nov 18, 2025 | 84.06% (0.84061) | 99.39th | v4 (v2025.03.14) |
| Mar 30, 2025 | 80.83% (0.80829) | 99.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 84.25% (0.84255) | 99.14th | v4 (v2025.03.14) |
| Mar 19, 2025 | 80.83% (0.80829) | 99.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 74.18% (0.74182) | 98.76th | v4 (v2025.03.14) |
| Dec 28, 2024 | 66.90% (0.66898) | 98.11th | v3 (v2023.03.01) |
| Dec 17, 2024 | 72.61% (0.72608) | 98.28th | v3 (v2023.03.01) |
| Oct 9, 2024 | 59.04% (0.59035) | 97.81th | v3 (v2023.03.01) |
| May 13, 2024 | 65.92% (0.65922) | 97.90th | v3 (v2023.03.01) |
| Feb 15, 2024 | 61.75% (0.61746) | 97.71th | v3 (v2023.03.01) |
| Sep 18, 2023 | 63.63% (0.63628) | 97.44th | v3 (v2023.03.01) |
| Jul 8, 2023 | 66.48% (0.66483) | 97.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 60.82% (0.60825) | 97.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.08% (0.03079) | 83.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.08% (0.03079) | 82.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.08% (0.03079) | 64.71th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.41% (0.02412) | 53.86th | v1 |
| Jan 6, 2022 | 2.41% (0.02412) | 53.41th | v1 |
| Sep 1, 2021 | 2.41% (0.02412) | 78.34th | v1 |
| Apr 14, 2021 | 2.41% (0.02412) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://downloads.asterisk.org/pub/security/AST-2018-009.html x_refsource_CONFIRMPatchVendor Advisory
- http://packetstormsecurity.com/files/149453/Asterisk-Project-Security-Advisory-AST-2018-009.html x_refsource_MISCThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2018/Sep/31 mailing-listx_refsource_FULLDISCMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/105389 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041694 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://issues.asterisk.org/jira/browse/ASTERISK-28013 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00034.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2018/Sep/53 mailing-listx_refsource_BUGTRAQMailing ListPatchThird Party Advisory
- https://security.gentoo.org/glsa/201811-11 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.debian.org/security/2018/dsa-4320 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://downloads.asterisk.org/pub/security/AST-2018-009.html | x_refsource_CONFIRMPatchVendor Advisory | |
| http://packetstormsecurity.com/files/149453/Asterisk-Project-Security-Advisory-AST-2018-009.html | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| http://seclists.org/fulldisclosure/2018/Sep/31 | mailing-listx_refsource_FULLDISCMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/105389 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041694 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://issues.asterisk.org/jira/browse/ASTERISK-28013 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/09/msg00034.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://seclists.org/bugtraq/2018/Sep/53 | mailing-listx_refsource_BUGTRAQMailing ListPatchThird Party Advisory | |
| https://security.gentoo.org/glsa/201811-11 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://www.debian.org/security/2018/dsa-4320 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 24, 2018
Updated Aug 5, 2024
Reserved Sep 20, 2018
Link CVE-2018-17281
CISA Vulnrichment
Updated n/a