chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request
Published Oct 21, 2011
6.8
MEDIUMCVSS 2.0
EPSS 2.38%
Description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.
Affected products
No data.
- 1.8.7
- 10.0.0
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:N/I:N/A:C
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 (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.38% (0.02380) | 83.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.38% (0.02380) | 81.64th | v5 (v2026.06.15) |
| Mar 17, 2025 | 7.32% (0.07325) | 91.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 96.39% (0.96387) | 99.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.55% (0.96549) | 99.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.43% (0.02428) | 81.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.43% (0.02428) | 79.82th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.43% (0.02428) | 58.43th | v2 (v2022.01.01) |
References (7)
- http://downloads.digium.com/pub/security/AST-2011-012.html x_refsource_CONFIRMVendor Advisory
- http://secunia.com/advisories/46420 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/8478 third-party-advisoryx_refsource_SREASON
- http://www.securityfocus.com/archive/1/520141/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/50177 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1026191 vdb-entryx_refsource_SECTRACK
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70706 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://downloads.digium.com/pub/security/AST-2011-012.html | x_refsource_CONFIRMVendor Advisory | |
| http://secunia.com/advisories/46420 | third-party-advisoryx_refsource_SECUNIA | |
| http://securityreason.com/securityalert/8478 | third-party-advisoryx_refsource_SREASON | |
| http://www.securityfocus.com/archive/1/520141/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/50177 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1026191 | vdb-entryx_refsource_SECTRACK | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/70706 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.