main/acl.c in Asterisk Open Source 1.6.0.x before 1.6.0.25, 1.6.1.x before 1.6.1.17, and 1.6.2.x before 1.6.2.5 does not properly enforce remote host access controls when CIDR notation "/0" is used in permit= and deny= configuration rules, which causes an improper arithmetic shift and might allow remote attackers to bypass ACL rules and access services from unauthorized hosts
Published Apr 1, 2010
4.3
MEDIUMCVSS 2.0
EPSS 3.53%
Description
main/acl.c in Asterisk Open Source 1.6.0.x before 1.6.0.25, 1.6.1.x before 1.6.1.17, and 1.6.2.x before 1.6.2.5 does not properly enforce remote host access controls when CIDR notation "/0" is used in permit= and deny= configuration rules, which causes an improper arithmetic shift and might allow remote attackers to bypass ACL rules and access services from unauthorized hosts.
Affected products
No data.
- 1.6.0
- 1.6.0.1
- 1.6.0.2
- 1.6.0.3
- 1.6.0.5
- 1.6.0.6
- 1.6.0.7
- 1.6.0.8
- 1.6.0.9
- 1.6.0.10
- 1.6.0.12
- 1.6.0.13
- 1.6.0.14
- 1.6.0.15
- 1.6.0.16
- 1.6.0.16
- 1.6.0.17
- 1.6.0.18
- 1.6.0.18
- 1.6.0.18
- 1.6.0.18
- 1.6.0.19
- 1.6.0.20
- 1.6.0.21
- 1.6.0.21
- 1.6.0.22
- 1.6.0.23
- 1.6.0.24
- 1.6.1
- 1.6.1.1
- 1.6.1.2
- 1.6.1.4
- 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
- 1.6.2.0
- 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
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:P/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.53% (0.03534) | 88.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.52% (0.03518) | 87.67th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.00% (0.01000) | 74.98th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.64% (0.09639) | 88.06th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.00% (0.01000) | 75.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.19% (0.01194) | 85.78th | v3 (v2023.03.01) |
| Apr 17, 2024 | 1.19% (0.01194) | 84.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.19% (0.01194) | 82.94th | 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) |
References (12)
- http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.0.diff x_refsource_CONFIRM
- http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.1.diff x_refsource_CONFIRM
- http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.2.diff x_refsource_CONFIRMPatch
- http://downloads.asterisk.org/pub/security/AST-2010-003.html x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037679.html vendor-advisoryx_refsource_FEDORA
- http://osvdb.org/62588 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/38752 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/39096 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/archive/1/509757/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/38424 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2010/0475 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/56552 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.