Asterisk MIME body denial of service
| asterisk-mime-body-dos (36261) |  Low 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.
Platforms Affected:
- Digium, Asterisk Open Source 1.4.x
Remedy:
Refer to AST-2007-021 for patch, upgrade or suggested workaround information. See References.
Consequences:
Denial of Service
References:
- AST-2007-021, Crash from invalid/corrupted MIME bodies when using voicemail with IMAP storage at http://downloads.digium.com/pub/asa/AST-2007-021.html.
- 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
Reported:
Aug 24, 2007
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