The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur
Published Mar 29, 2013
5.0
MEDIUMCVSS 2.0
EPSS 1.25%
Description
The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur.
Affected products
No data.
Configuration 1
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.1
- 1.8.1
- 1.8.1.1
- 1.8.1.2
- 1.8.2
- 1.8.2
- 1.8.2.1
- 1.8.2.2
- 1.8.2.3
- 1.8.2.4
- 1.8.3
- 1.8.3
- 1.8.3
- 1.8.3
- 1.8.3.1
- 1.8.3.2
- 1.8.3.3
- 1.8.4
- 1.8.4
- 1.8.4
- 1.8.4
- 1.8.4.1
- 1.8.4.2
- 1.8.4.3
- 1.8.4.4
- 1.8.5
- 1.8.5.0
- 1.8.6.0
- 1.8.6.0
- 1.8.6.0
- 1.8.6.0
- 1.8.7.0
- 1.8.7.0
- 1.8.7.0
- 1.8.7.1
- 1.8.7.2
- 1.8.8.0
- 1.8.8.0
- 1.8.8.0
- 1.8.8.0
- 1.8.8.0
- 1.8.8.0
- 1.8.8.1
- 1.8.8.2
- 1.8.9.0
- 1.8.9.0
- 1.8.9.0
- 1.8.9.0
- 1.8.9.1
- 1.8.9.2
- 1.8.9.3
- 1.8.10.0
- 1.8.10.0
- 1.8.10.0
- 1.8.10.0
- 1.8.10.0
- 1.8.10.1
- 1.8.11.0
- 1.8.11.0
- 1.8.11.0
- 1.8.11.1
- 1.8.12
- 1.8.12.0
- 1.8.12.0
- 1.8.12.0
- 1.8.12.1
- 1.8.12.2
- 1.8.13.0
- 1.8.13.0
- 1.8.13.0
- 1.8.13.1
- 1.8.14.0
- 1.8.14.0
- 1.8.14.0
- 1.8.14.1
- 1.8.15.0
- 1.8.15.0
- 1.8.15.1
- 1.8.16.0
- 1.8.16.0
- 1.8.16.0
- 1.8.17.0
- 1.8.17.0
- 1.8.17.0
- 1.8.17.0
- 1.8.18.0
- 1.8.18.0
- 1.8.18.1
- 1.8.19.0
- 1.8.19.0
- 1.8.19.0
- 1.8.19.1
- 1.8.20.0
- 1.8.20.0
- 1.8.20.0
- 1.8.20.1
Configuration 2
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.1
- 10.1.0
- 10.1.0
- 10.1.0
- 10.1.1
- 10.1.2
- 10.1.3
- 10.2.0
- 10.2.0
- 10.2.0
- 10.2.0
- 10.2.0
- 10.2.1
- 10.3.0
- 10.3.0
- 10.3.0
- 10.3.1
- 10.4.0
- 10.4.0
- 10.4.0
- 10.4.0
- 10.4.1
- 10.4.2
- 10.5.0
- 10.5.0
- 10.5.0
- 10.5.1
- 10.5.2
- 10.6.0
- 10.6.0
- 10.6.0
- 10.6.1
- 10.7.0
- 10.7.0
- 10.7.1
- 10.8.0
- 10.8.0
- 10.8.0
- 10.9.0
- 10.9.0
- 10.9.0
- 10.9.0
- 10.10.0
- 10.10.0
- 10.10.0
- 10.10.1
- 10.11.0
- 10.11.0
- 10.11.0
- 10.11.1
- 10.12.0
- 10.12.0
- 10.12.0
- 10.12.1
Configuration 3
- 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
Configuration 4
- 1.8.15
- 1.8.15
- 1.8.15
- 1.8.15
- 1.8.15.0
- 1.8.15.0
Configuration 5
- c.3.2.2
- c.3.3
- c.3.3.2
Configuration 6
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.0.0
- 10.1.0
- 10.1.0
- 10.1.0
- 10.2.0
- 10.2.0
- 10.2.0
- 10.2.0
- 10.2.0
- 10.3.0
- 10.3.0
- 10.3.0
- 10.4.0
- 10.4.0
- 10.4.0
- 10.4.0
- 10.5.0
- 10.5.0
- 10.5.0
- 10.6.0
- 10.6.0
- 10.6.0
- 10.7.0
- 10.7.0
- 10.8.0
- 10.8.0
- 10.8.0
- 10.9.0
- 10.10.0
- 10.10.0
- 10.10.0
- 10.11.0
- 10.11.0
- 10.11.0
- 10.11.0
- 10.12.0
- 10.12.0
- 10.12.0
- 10.12.1
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.25% (0.01252) | 68.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.25% (0.01252) | 65.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.63% (0.00629) | 68.50th | v4 (v2025.03.14) |
| Dec 17, 2024 | 29.77% (0.29774) | 96.92th | v3 (v2023.03.01) |
| Dec 12, 2024 | 0.59% (0.00594) | 79.07th | v3 (v2023.03.01) |
| May 10, 2024 | 0.46% (0.00457) | 75.17th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.43% (0.00429) | 74.15th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.40% (0.00396) | 72.92th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.36% (0.00362) | 71.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.61% (0.00610) | 75.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- http://downloads.asterisk.org/pub/security/AST-2013-003.html x_refsource_CONFIRMVendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-21013 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://downloads.asterisk.org/pub/security/AST-2013-003.html | x_refsource_CONFIRMVendor Advisory | |
| https://issues.asterisk.org/jira/browse/ASTERISK-21013 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.