Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer
Published Jun 4, 2008
4.3
MEDIUMCVSS 2.0
EPSS 7.27%
Description
Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer.
Affected products
No data.
- ≤ b2.5.2
- b.1.3.2
- b.1.3.3
- b.2.2.0
- b.2.2.1
- b.2.3.1
- b.2.3.2
- b.2.3.3
- b.2.3.4
- b.2.5.0
- b2.5.1
- ≤ 1.2.28
- 1.0
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.0.11
- 1.0.11.1
- 1.0.12
- 1.2.0
- 1.2.0beta1
- 1.2.0beta2
- 1.2.1
- 1.2.2
- 1.2.10
- 1.2.11
- 1.2.12
- 1.2.12.1
- 1.2.13
- 1.2.14
- 1.2.15
- 1.2.16
- 1.2.17
- 1.2.18
- 1.2.19
- 1.2.20
- 1.2.21
- 1.2.21.1
- 1.2.22
- 1.2.23
- 1.2.24
- 1.2.25
- 1.2.26
- 1.2.26.1
- 1.2.26.2
- 1.2.27
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 4, 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 (15 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 7.27% (0.07273) | 94.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.27% (0.07273) | 93.53th | v5 (v2026.06.15) |
| Mar 24, 2026 | 10.13% (0.10134) | 93.04th | v4 (v2025.03.14) |
| Dec 17, 2025 | 12.47% (0.12474) | 93.67th | v4 (v2025.03.14) |
| Oct 29, 2025 | 14.00% (0.13998) | 94.03th | v4 (v2025.03.14) |
| Jun 4, 2025 | 12.32% (0.12316) | 93.50th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.69% (0.07690) | 91.09th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.94% (0.08941) | 87.50th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.69% (0.07690) | 91.29th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.37% (0.01367) | 86.82th | v3 (v2023.03.01) |
| Jan 19, 2024 | 1.33% (0.01331) | 84.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.29% (0.01286) | 83.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.36% (0.05356) | 89.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.36% (0.05356) | 88.93th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.36% (0.05356) | 76.09th | v2 (v2022.01.01) |
References (11)
- http://bugs.digium.com/view.php?id=12607 x_refsource_CONFIRM
- http://downloads.digium.com/pub/security/AST-2008-008.html x_refsource_CONFIRM
- http://secunia.com/advisories/30517 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34982 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200905-01.xml vendor-advisoryx_refsource_GENTOO
- http://svn.digium.com/view/asterisk?view=rev&revision=120109 x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/493020/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securitytracker.com/id?1020166 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2008/1731 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42823 vdb-entryx_refsource_XF
- https://www.exploit-db.com/exploits/5749 exploitx_refsource_EXPLOIT-DB
| Link | Providers | Tags |
|---|---|---|
| http://bugs.digium.com/view.php?id=12607 | x_refsource_CONFIRM | |
| http://downloads.digium.com/pub/security/AST-2008-008.html | x_refsource_CONFIRM | |
| http://secunia.com/advisories/30517 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/34982 | third-party-advisoryx_refsource_SECUNIA | |
| http://security.gentoo.org/glsa/glsa-200905-01.xml | vendor-advisoryx_refsource_GENTOO | |
| http://svn.digium.com/view/asterisk?view=rev&revision=120109 | x_refsource_CONFIRM | |
| http://www.securityfocus.com/archive/1/493020/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securitytracker.com/id?1020166 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2008/1731 | vdb-entryx_refsource_VUPEN | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/42823 | vdb-entryx_refsource_XF | |
| https://www.exploit-db.com/exploits/5749 | exploitx_refsource_EXPLOIT-DB |
Change history (0)
No recorded changes yet.