Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

BID:23155

Info

Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

Bugtraq ID: 23155
Class: Access Validation Error
CVE: CVE-2007-1595
Remote: Yes
Local: No
Published: Mar 27 2007 12:00AM
Updated: Jun 07 2007 04:40PM
Credit: Philipp Kempgen is credited with the discovery of this vulnerability.
Vulnerable: SuSE Linux 10.1
Asterisk Asterisk 1.4.2
Asterisk Asterisk 1.4.1
Asterisk Asterisk 1.2.17
Asterisk Asterisk 1.2.16
Asterisk Asterisk 1.2.15
Asterisk Asterisk 1.2.14
Asterisk Asterisk 1.2.13
Asterisk Asterisk 1.2.11
Asterisk Asterisk 1.2.11
Asterisk Asterisk 1.2.10
Asterisk Asterisk 1.2.9
Asterisk Asterisk 1.2.8
Asterisk Asterisk 1.2.7
Asterisk Asterisk 1.2.6
Asterisk Asterisk 1.2.5
Asterisk Asterisk 1.2 .0-beta2
Asterisk Asterisk 1.2 .0-beta1
Asterisk Asterisk 1.4 Beta
Not Vulnerable:

Discussion

Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

Asterisk PBX is prone to a security-bypass vulnerability because the Asterisk Extension Language (AEL) fails to securely generate extensions when compiling arbitrary labels.

An attacker can exploit this issue to bypass security restrictions. The attacker may then be able to access sensitive information and to change user settings.

This issue affects versions in the 1.2.0 and 1.4.0 branches.

This issue affects all versions in the following branches:

1.2.x
1.4.x

Exploit / POC

Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

An attacker can exploit this issue using readily available VoIP utilities.

Solution / Fix

Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

Solution:
The vendor has released fixes to address this issue. Please see the references for more information.


Asterisk Asterisk 1.4 Beta

Asterisk Asterisk 1.2 .0-beta1

Asterisk Asterisk 1.2 .0-beta2

Asterisk Asterisk 1.2.10

Asterisk Asterisk 1.2.11

Asterisk Asterisk 1.2.11

Asterisk Asterisk 1.2.13

Asterisk Asterisk 1.2.14

Asterisk Asterisk 1.2.15

Asterisk Asterisk 1.2.16

Asterisk Asterisk 1.2.17

Asterisk Asterisk 1.2.5

Asterisk Asterisk 1.2.6

Asterisk Asterisk 1.2.7

Asterisk Asterisk 1.2.8

Asterisk Asterisk 1.2.9

Asterisk Asterisk 1.4.1

Asterisk Asterisk 1.4.2

References

Asterisk PBX_AEL.C Switch Blocks Security Bypass Vulnerability

References:
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report