HIGH
chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion)
Published Apr 17, 2017
7.5
HIGHCVSS 3.0
EPSS 5.32%
Description
chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).
Affected products
No data.
Configuration 1
OR
- 11.0.0
- 11.0.0
- 11.0.0
- 11.0.0
- 11.0.0
- 11.0.1
- 11.0.2
- 11.1.0
- 11.1.0
- 11.1.0
- 11.1.1
- 11.1.2
- 11.2.0
- 11.2.0
- 11.2.0
- 11.2.1
- 11.2.2
- 11.3.0
- 11.4.0
- 11.5.0
- 11.5.1
- 11.6.0
- 11.6.1
- 11.7.0
- 11.8.0
- 11.8.1
- 11.9.0
- 11.10.0
- 11.10.1
- 11.10.2
- 11.11.0
- 11.12.0
- 11.12.1
- 11.13.0
- 11.13.1
- 11.14.0
- 11.14.1
- 11.14.2
- 11.15.0
- 11.15.1
- 11.16.0
- 11.17.0
- 11.17.1
- 11.18.0
- 11.19.0
- 11.20.0
- 11.21.0
- 11.21.1
- 11.21.2
- 11.22.0
- 11.22.0
- 11.23.0
- 11.23.0
- 13.0.0
- 13.0.0
- 13.0.0
- 13.0.0
- 13.0.1
- 13.0.2
- 13.1.0
- 13.1.1
- 13.2.0
- 13.2.1
- 13.3.0
- 13.3.1
- 13.3.2
- 13.4.0
- 13.5.0
- 13.6.0
- 13.7.0
- 13.7.1
- 13.7.2
- 13.8.0
- 13.8.0
- 13.8.1
- 13.8.2
- 13.9.0
- 13.9.1
- 13.10.0
- 13.10.0
- 13.11.0
Configuration 2
OR
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6
- 11.6.0
- 11.6.0
- 11.6.0
- 11.6.0
- 13.8
- 13.8
- 13.8
- 13.8
- 13.8
- 13.8.0
- 13.8.0
Configuration 3
- 8.0
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.
5.32% 0.05321
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05321
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.32% (0.05321) | 92.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.47% (0.05468) | 91.70th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.63% (0.06630) | 90.28th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.08% (0.12078) | 89.64th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.63% (0.06630) | 90.51th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.03% (0.04034) | 92.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.03% (0.04034) | 90.72th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (5)
- http://downloads.asterisk.org/pub/security/AST-2016-007.html x_refsource_CONFIRMMitigationVendor Advisory
- http://www.debian.org/security/2016/dsa-3700 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1374733 x_refsource_CONFIRMIssue TrackingPatch
- https://issues.asterisk.org/jira/browse/ASTERISK-26272 x_refsource_MISCIssue TrackingPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://downloads.asterisk.org/pub/security/AST-2016-007.html | x_refsource_CONFIRMMitigationVendor Advisory | |
| http://www.debian.org/security/2016/dsa-3700 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1374733 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://issues.asterisk.org/jira/browse/ASTERISK-26272 | x_refsource_MISCIssue TrackingPatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 17, 2017
Updated Aug 6, 2024
Reserved Sep 9, 2016
Link CVE-2016-7551
CISA Vulnrichment
Updated n/a