Asterisk MIME body denial of service
| asterisk-mime-body-dos (36261) |  Medium Risk |
Description:
Asterisk is vulnerable to a denial of service, caused by the improper handling of emails with a malformed MIME body when the IMAP backend for the voicemail feature is used. By persuading a victim to open a specially-crafted email containing a MIME body and listen to their voicemail, a remote attacker could exploit this vulnerability to crash the service.
*CVSS:
| Base Score: | 4.3 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 3.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to AST-2007-021 for patch, upgrade or suggested workaround information. See References.
References:
- AST-2007-021: Crash from invalid/corrupted MIME bodies when using voicemail with IMAP storage.
- BID-25438: Asterisk Malformed MIME Body Remote Denial of Service Vulnerability
- CVE-2007-4521: Asterisk Open Source 1.4.5 through 1.4.11, when configured to use an IMAP voicemail storage backend, allows remote attackers to cause a denial of service via an e-mail with an invalid/corrupted MIME body, which triggers a crash when the recipient listens to voicemail.
- SA26601: Asterisk Voicemail IMAP Backend Invalid MIME Denial of Service
- SECTRACK ID: 1018606: Asterisk IMAP Voicemail Storage Bug Lets Remote Users Deny Service
- VUPEN/ADV-2007-2978: Asterisk IMAP Backend Storage for Voicemail Denial of Service Vulnerability
Platforms Affected:
- Digium Asterisk Open Source 1.4.x
Reported:
Aug 24, 2007
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The information within this database may change without notice. 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. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.