MEDIUM
Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections
Published Apr 27, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.50%
Description
Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections.
Affected products
No data.
Configuration 1
OR
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.10
- 1.4.10.1
- 1.4.11
- 1.4.12
- 1.4.12.1
- 1.4.13
- 1.4.14
- 1.4.15
- 1.4.16
- 1.4.16.1
- 1.4.16.2
- 1.4.17
- 1.4.18
- 1.4.19
- 1.4.19
- 1.4.19
- 1.4.19
- 1.4.19
- 1.4.19.1
- 1.4.19.2
- 1.4.20
- 1.4.20
- 1.4.20
- 1.4.20
- 1.4.20.1
- 1.4.21
- 1.4.21
- 1.4.21
- 1.4.21.1
- 1.4.21.2
- 1.4.22
- 1.4.22
- 1.4.22
- 1.4.22
- 1.4.22
- 1.4.22
- 1.4.22.1
- 1.4.22.2
- 1.4.23
- 1.4.23
- 1.4.23
- 1.4.23
- 1.4.23
- 1.4.23.1
- 1.4.23.2
- 1.4.24
- 1.4.24
- 1.4.24.1
- 1.4.25
- 1.4.25
- 1.4.25.1
- 1.4.26
- 1.4.26
- 1.4.26
- 1.4.26
- 1.4.26
- 1.4.26
- 1.4.26
- 1.4.26.1
- 1.4.26.2
- 1.4.26.3
- 1.4.27
- 1.4.27
- 1.4.27
- 1.4.27
- 1.4.27
- 1.4.27
- 1.4.27.1
- 1.4.28
- 1.4.28
- 1.4.29
- 1.4.29
- 1.4.29.1
- 1.4.30
- 1.4.30
- 1.4.30
- 1.4.31
- 1.4.31
- 1.4.31
- 1.4.32
- 1.4.32
- 1.4.33
- 1.4.33
- 1.4.33
- 1.4.33.1
- 1.4.34
- 1.4.34
- 1.4.34
- 1.4.35
- 1.4.35
- 1.4.36
- 1.4.36
- 1.4.37
- 1.4.37
- 1.4.38
- 1.4.38
- 1.4.39
- 1.4.39
- 1.4.39.1
- 1.4.39.2
- 1.4.40
- 1.4.40
- 1.4.40
- 1.4.40
Configuration 2
OR
- 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
Configuration 3
OR
- 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
Configuration 4
AND
OR
- c.1.0
- c.1.0
- c.1.6
- c.1.6.1
- c.1.6.2
- c.1.8.0
- c.1.8.1
- c.2.3
- c.3.0
- c.3.1.0
- c.3.1.1
- c.3.2.2
- c.3.2.3
- c.3.3.2
- c.3.6.2
Configuration 5
OR
- 1.6.1.0
- 1.6.1.0
- 1.6.1.0
- 1.6.1.0
- 1.6.1.0
- 1.6.1.1
- 1.6.1.2
- 1.6.1.3
- 1.6.1.4
- 1.6.1.5
- 1.6.1.5
- 1.6.1.6
- 1.6.1.7
- 1.6.1.7
- 1.6.1.8
- 1.6.1.9
- 1.6.1.10
- 1.6.1.10
- 1.6.1.10
- 1.6.1.10
- 1.6.1.11
- 1.6.1.12
- 1.6.1.12
- 1.6.1.13
- 1.6.1.13
- 1.6.1.14
- 1.6.1.15
- 1.6.1.16
- 1.6.1.17
- 1.6.1.18
- 1.6.1.18
- 1.6.1.18
- 1.6.1.19
- 1.6.1.19
- 1.6.1.19
- 1.6.1.19
- 1.6.1.20
- 1.6.1.20
- 1.6.1.20
- 1.6.1.21
- 1.6.1.22
- 1.6.1.23
- 1.6.1.24
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.
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.
2.50% 0.02504
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02504
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 | 2.50% (0.02504) | 84.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.50% (0.02504) | 82.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.15% (0.00147) | 32.55th | v4 (v2025.03.14) |
| Dec 17, 2024 | 34.39% (0.34389) | 97.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.06% (0.11060) | 94.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
Weaknesses (1)
References (11)
- http://downloads.digium.com/pub/security/AST-2011-005.html x_refsource_CONFIRMVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/44197 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/44529 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1025432 vdb-entryx_refsource_SECTRACK
- http://www.debian.org/security/2011/dsa-2225 vendor-advisoryx_refsource_DEBIAN
- http://www.vupen.com/english/advisories/2011/1086 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/1107 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2011/1188 vdb-entryx_refsource_VUPEN
- https://bugzilla.redhat.com/show_bug.cgi?id=698916 x_refsource_CONFIRMPatch
| Link | Providers | Tags |
|---|---|---|
| http://downloads.digium.com/pub/security/AST-2011-005.html | x_refsource_CONFIRMVendor Advisory | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html | vendor-advisoryx_refsource_FEDORA | |
| http://secunia.com/advisories/44197 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/44529 | third-party-advisoryx_refsource_SECUNIA | |
| http://securitytracker.com/id?1025432 | vdb-entryx_refsource_SECTRACK | |
| http://www.debian.org/security/2011/dsa-2225 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.vupen.com/english/advisories/2011/1086 | vdb-entryx_refsource_VUPENVendor Advisory | |
| http://www.vupen.com/english/advisories/2011/1107 | vdb-entryx_refsource_VUPEN | |
| http://www.vupen.com/english/advisories/2011/1188 | vdb-entryx_refsource_VUPEN | |
| https://bugzilla.redhat.com/show_bug.cgi?id=698916 | x_refsource_CONFIRMPatch |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 27, 2011
Updated Aug 6, 2024
Reserved Mar 23, 2011
Link CVE-2011-1507
CISA Vulnrichment
Updated n/a