The handle_request_info function in channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, when automon is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted sequence of SIP requests
Published Dec 15, 2011
4.3
MEDIUMCVSS 2.0
EPSS 2.35%
Description
The handle_request_info function in channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, when automon is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted sequence of SIP requests.
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
- 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
- 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
Configuration 2
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.0
- 1.6.2.1
- 1.6.2.1
- 1.6.2.2
- 1.6.2.3
- 1.6.2.4
- 1.6.2.5
- 1.6.2.6
- 1.6.2.6
- 1.6.2.6
- 1.6.2.15
- 1.6.2.16
- 1.6.2.16
- 1.6.2.16.1
- 1.6.2.16.2
- 1.6.2.17
- 1.6.2.17
- 1.6.2.17
- 1.6.2.17
- 1.6.2.17.1
- 1.6.2.17.2
- 1.6.2.17.3
- 1.6.2.18
- 1.6.2.18
- 1.6.2.19
- 1.6.2.19
- 1.6.2.20
- 1.6.2.21
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:M/Au:N/C:N/I:N/A:P
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.35% (0.02354) | 83.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.44% (0.02443) | 82.14th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.63% (0.00634) | 67.95th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.25% (0.03254) | 78.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.63% (0.00634) | 68.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.20% (0.04199) | 92.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.20% (0.04199) | 90.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (6)
- http://downloads.asterisk.org/pub/security/AST-2011-014.html x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2011/12/09/3 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/12/09/4 mailing-listx_refsource_MLIST
- http://osvdb.org/77598 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/47273 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2367 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://downloads.asterisk.org/pub/security/AST-2011-014.html | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2011/12/09/3 | mailing-listx_refsource_MLIST | |
| http://openwall.com/lists/oss-security/2011/12/09/4 | mailing-listx_refsource_MLIST | |
| http://osvdb.org/77598 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/47273 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2011/dsa-2367 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.