asterisk: Replies to failed login attempts differently based on whether the user account exists (information disclosure)
Published Jan 14, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.71%
Description
IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x before B.2.5.7, C.1.x.x before C.1.10.4, and C.2.x.x before C.2.1.2.1; and s800i 1.2.x before 1.3.0 responds differently to a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.
Affected products
No data.
- ≤ b.2.5.2
- ≤ c.1.0
- a
- 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.2.3.5
- b.2.3.6
- b.2.5.0
- b.2.5.1
- b.2.5.3
- c.1.0
- ≤ 1.2.30.4
- ≤ 1.4.23
- ≤ 1.6.0.3
- 1.2.0
- 1.2.0
- 1.2.0
- 1.2.0
- 1.2.0
- 1.2.0beta1
- 1.2.0beta2
- 1.2.1
- 1.2.2
- 1.2.2
- 1.2.3
- 1.2.3
- 1.2.10
- 1.2.10
- 1.2.11
- 1.2.11
- 1.2.12
- 1.2.12
- 1.2.12.1
- 1.2.12.1
- 1.2.13
- 1.2.13
- 1.2.14
- 1.2.14
- 1.2.15
- 1.2.15
- 1.2.16
- 1.2.16
- 1.2.17
- 1.2.17
- 1.2.18
- 1.2.18
- 1.2.19
- 1.2.19
- 1.2.20
- 1.2.20
- 1.2.21
- 1.2.21
- 1.2.21.1
- 1.2.21.1
- 1.2.22
- 1.2.22
- 1.2.23
- 1.2.23
- 1.2.24
- 1.2.24
- 1.2.25
- 1.2.25
- 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
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.7.1
- 1.4.8
- 1.4.9
- 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
- 1.4.18.1
- 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
- 1.4.21
- 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
- 1.4.22.2
- 1.4.23
- 1.4.23
- 1.4.23
- 1.4_revision_95946
- 1.4beta
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0.1
- 1.6.0.2
- 1.6.0.3
- 1.2
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:N/C:P/I:N/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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.71% (0.02715) | 85.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.71% (0.02715) | 84.02th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.91% (0.00908) | 74.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.85% (0.00854) | 82.94th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.85% (0.00854) | 81.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.85% (0.00854) | 79.68th | 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 (15)
- http://downloads.digium.com/pub/security/AST-2009-001.html x_refsource_CONFIRM
- http://secunia.com/advisories/33453 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/34982 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37677 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200905-01.xml vendor-advisoryx_refsource_GENTOO
- http://securityreason.com/securityalert/4910 third-party-advisoryx_refsource_SREASON
- http://www.debian.org/security/2009/dsa-1952 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/499884/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/33174 vdb-entryx_refsource_BIDPatch
- http://www.securitytracker.com/id?1021549 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/0063 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-0041 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=480132 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-0041
- https://www.cve.org/CVERecord?id=CVE-2009-0041
Change history (0)
No recorded changes yet.