CVE-2009-0041: Infoleak

Published Jan 14, 2009
·
Updated

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 Software

150 affected components
Asterisk Asterisk Business Edition=b.2.2.0
Asterisk Open Source=1.4.22
Asterisk Open Source=1.4.23-rc1
Asterisk Open Source=1.2.16-netsec
Asterisk Open Source=1.6.0-rc4
Asterisk Open Source=1.2.14
Asterisk Asterisk Business Edition=b.2.3.5
Asterisk Open Source=1.6.0-beta7
Asterisk Open Source=1.2.30.2
Asterisk Open Source=1.4.19.1
Asterisk Open Source=1.4.19-rc2
Asterisk Open Source=1.2.20-netsec
Asterisk Open Source=1.6.0-rc5
Asterisk Asterisk Business Edition=c.1.0-beta7
Asterisk Open Source=1.4.23-rc2
Asterisk Open Source=1.2.12-netsec
Asterisk Open Source=1.2.19-netsec
Asterisk Open Source<=1.4.23
Asterisk Open Source=1.2.15
Asterisk Open Source=1.2.27
Asterisk Open Source=1.4.9
Asterisk Open Source=1.4.20-rc2
Asterisk Open Source=1.4.10
Asterisk Open Source=1.4.6
Asterisk Open Source=1.2.14-netsec
Asterisk Open Source=1.2.3
Asterisk Open Source=1.2.23
Asterisk Open Source=1.2.0-beta2
Asterisk Open Source=1.6.0-beta5
Asterisk Open Source=1.2.26.2-netsec
Asterisk Open Source=1.4.0
Asterisk Open Source=1.4.20
Asterisk Open Source=1.2.26.1
Asterisk Open Source=1.4.15
Asterisk Open Source=1.4beta
Asterisk Open Source=1.4_revision_95946
Asterisk Open Source=1.4.21.1
Asterisk Open Source=1.2.13-netsec
Asterisk Open Source=1.4.21-rc2
Asterisk Open Source=1.6.0.1
Asterisk Open Source=1.2.25-netsec
Asterisk Open Source=1.2.0-rc2
Asterisk Open Source=1.2.1
Asterisk Open Source<=1.6.0.3
Asterisk Open Source=1.2.26-netsec
Asterisk Open Source=1.6.0-beta7.1
Asterisk Open Source=1.4.19-rc3
Asterisk Open Source=1.6.0-rc6
Asterisk Asterisk Business Edition=b.2.3.1
Asterisk Open Source=1.2.24
Asterisk Open Source=1.6.0-beta1
Asterisk Open Source=1.4.12.1
Asterisk Open Source=1.4.12
Asterisk Open Source=1.4.19-rc4
Asterisk Open Source=1.4.16.2
Asterisk Open Source=1.4.13
Asterisk Open Source=1.2.0
Asterisk Open Source=1.2.25
Asterisk Open Source=1.2.3-netsec
Asterisk Open Source=1.2.18-netsec
Asterisk Open Source=1.2.10-netsec
Asterisk Open Source=1.2.11
Asterisk Open Source=1.4.10.1
Asterisk Open Source=1.2.12
Asterisk Open Source=1.4.18.1
Asterisk Open Source=1.2.13
Asterisk Asterisk Business Edition=b.2.5.3
Asterisk Asterisk Business Edition=b.2.5.0
Asterisk Asterisk Business Edition=b.2.3.3
Asterisk Open Source=1.4.2
Asterisk Open Source=1.2.2
Asterisk Open Source=1.4.1
Asterisk Open Source=1.6.0-beta3
Asterisk Asterisk Business Edition<=c.1.0
Asterisk Open Source=1.6.0-beta2
Asterisk Open Source=1.2.26
Asterisk Open Source=1.4.0-beta4
Asterisk Open Source=1.2.24-netsec
Asterisk Open Source=1.4.20-rc3
Asterisk Open Source=1.4.11
Asterisk S800i Appliance=1.2
Asterisk Open Source=1.2.21
Asterisk Open Source=1.4.3
Asterisk Asterisk Business Edition=b.2.5.1
Asterisk Open Source=1.2.21-netsec
Asterisk Open Source=1.4.7
Asterisk Asterisk Business Edition=b.1.3.2
Asterisk Open Source=1.2.0-rc1
Asterisk Open Source=1.6.0-beta8
Asterisk Open Source=1.4.22-rc3
Asterisk Open Source=1.2.11-netsec
Asterisk Open Source=1.4.4
Asterisk Open Source=1.4.7.1
Asterisk Open Source=1.2.26.2
Asterisk Open Source=1.4.0-beta2
Asterisk Open Source=1.4.22.2
Asterisk Open Source=1.2.10
Asterisk Open Source=1.2.17
Asterisk Asterisk Business Edition=b.1.3.3
Asterisk Open Source=1.4.5
Asterisk Open Source=1.4.23
Asterisk Open Source=1.2.30
Asterisk Open Source=1.2.17-netsec
Asterisk Open Source=1.2.20
Asterisk Asterisk Business Edition<=b.2.5.2
Asterisk Asterisk Business Edition=b.2.3.4
Asterisk Open Source=1.4.0-beta3
Asterisk Open Source=1.2.0beta1
Asterisk Open Source=1.4.22.1
Asterisk Open Source=1.4.18
Asterisk Open Source=1.2.15-netsec
Asterisk Asterisk Business Edition=b.2.3.6
Asterisk Open Source=1.2.22
Asterisk Open Source=1.4.19.2
Asterisk Open Source=1.6.0-beta9
Asterisk Open Source=1.2.30.3
Asterisk Open Source=1.2.2-netsec
Asterisk Open Source=1.4.16
Asterisk Open Source=1.6.0.3
Asterisk Open Source=1.4.14
Asterisk Open Source=1.2.0-beta1
Asterisk Open Source=1.2.16
Asterisk Open Source=1.6.0-beta4
Asterisk Open Source=1.2.12.1
Asterisk Open Source=1.6.0.2
Asterisk Open Source<=1.2.30.4
Asterisk Open Source=1.4.16.1
Asterisk Open Source=1.4.21-rc1
Asterisk Open Source=1.2.0beta2
Asterisk Open Source=1.4.21
Asterisk Open Source=1.2.21.1
Asterisk Open Source=1.2.26.1-netsec
Asterisk Open Source=1.4.21.2
Asterisk Open Source=1.2.19
Asterisk Asterisk Business Edition=b.2.2.1
Asterisk Asterisk Business Edition=a
Asterisk Open Source=1.4.19-rc1
Asterisk Open Source=1.4.20-rc1
Asterisk Open Source=1.2.12.1-netsec
Asterisk Open Source=1.2.28
Asterisk Open Source=1.4.19
Asterisk Asterisk Business Edition=b.2.3.2
Asterisk Open Source=1.2.21.1-netsec
Asterisk Open Source=1.4.8
Asterisk Open Source=1.4.17
Asterisk Open Source=1.4.22-rc4
Asterisk Open Source=1.2.18
Asterisk Open Source=1.2.22-netsec
Asterisk Open Source=1.2.23-netsec
Asterisk Open Source=1.2.29

Remediation

Patch Available

http://www.securityfocus.com/bid/33174

Event History

Jan 14, 2009
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
Description
Data Sourced
via NVD·11:30 PM
RemedyDescriptionSeverityWeaknessAffected Software
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2009-0041?

CVE-2009-0041 is considered a medium severity vulnerability due to its potential for unauthorized access.

2

How do I fix CVE-2009-0041?

To fix CVE-2009-0041, upgrade your Asterisk Open Source version to 1.2.31 or higher, 1.4.23-rc4 or higher, or 1.6.0.3-rc2 or higher.

3

What software is affected by CVE-2009-0041?

CVE-2009-0041 affects Asterisk Open Source versions prior to 1.2.31, 1.4.23-rc4, and 1.6.0.3, along with specific Business Edition versions.

4

What type of vulnerability is CVE-2009-0041?

CVE-2009-0041 is an authentication bypass vulnerability that allows attackers to receive different responses during failed login attempts.

5

Can CVE-2009-0041 be exploited remotely?

Yes, CVE-2009-0041 can be exploited remotely, potentially allowing an attacker to gain unauthorized access to the system.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203