Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching
Published Dec 17, 2008
4.3
MEDIUMCVSS 2.0
EPSS 1.96%
Description
Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching.
Affected products
No data.
- b.2.3.4
- b.2.3.5
- b.2.5.0
- b.2.5.1
- b.2.5.3
- 1.2.26
- 1.2.26
- 1.2.26.1
- 1.2.26.1
- 1.2.26.2
- 1.2.26.2
- 1.2.27
- 1.2.28
- 1.2.29
- 1.2.30
- 1.2.30.2
- 1.2.30.3
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.96% (0.01959) | 79.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.96% (0.01959) | 77.64th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.99% (0.01989) | 82.41th | v4 (v2025.03.14) |
| Dec 23, 2024 | 22.72% (0.22717) | 96.53th | v3 (v2023.03.01) |
| Dec 17, 2024 | 21.42% (0.21422) | 96.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 7.95% (0.07948) | 93.21th | 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 (10)
- http://downloads.digium.com/pub/security/AST-2008-012.html x_refsource_CONFIRM
- http://osvdb.org/50675 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/32956 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34982 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200905-01.xml vendor-advisoryx_refsource_GENTOO
- http://securityreason.com/securityalert/4769 third-party-advisoryx_refsource_SREASON
- http://www.securityfocus.com/archive/1/499117/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/32773 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1021378 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2008/3403 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://downloads.digium.com/pub/security/AST-2008-012.html | x_refsource_CONFIRM | |
| http://osvdb.org/50675 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/32956 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/34982 | third-party-advisoryx_refsource_SECUNIA | |
| http://security.gentoo.org/glsa/glsa-200905-01.xml | vendor-advisoryx_refsource_GENTOO | |
| http://securityreason.com/securityalert/4769 | third-party-advisoryx_refsource_SREASON | |
| http://www.securityfocus.com/archive/1/499117/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/32773 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1021378 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2008/3403 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.