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Cyrus IMAP Server Multiple Vulnerabilities
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Secunia Advisory:
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SA13274
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Release Date:
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2004-11-23
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Last Update:
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2004-12-10
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Cyrus IMAP Server 2.x
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| | CVE reference: | CVE-2004-1011 (Secunia mirror)
CVE-2004-1012 (Secunia mirror)
CVE-2004-1013 (Secunia mirror)
CVE-2004-1015 (Secunia mirror)
CVE-2004-1067 (Secunia mirror)
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Description:
Multiple vulnerabilities have been reported in Cyrus IMAP Server, which can be exploited by malicious people to compromise a vulnerable system.
1) A boundary error within the handling of the "PROXY" and "LOGIN" commands can be exploited to cause a stack-based buffer overflow by passing an overly long username.
Successful exploitation allows execution of arbitrary code prior to authentication, but requires that the "IMAPMAGICPLUS" option is enabled.
This vulnerability has been reported in versions 2.2.4 through 2.2.8.
2) An input validation error within the argument parser for the "PARTIAL" command can be exploited to reference memory outside an allocated buffer.
Combined with another error, successful exploitation allows overwriting a single byte, which may allow execution of arbitrary code.
This vulnerability has been reported in version 2.2.6 and prior.
3) An input validation error within the argument handler for the "FETCH" command can be exploited to reference memory outside an allocated buffer.
Combined with another error, successful exploitation allows overwriting a single byte, which may allow execution of arbitrary code.
This vulnerability has been reported in version 2.2.8 and prior.
4) The handler for the "APPEND" command uses an undefined programming construct, which potentially could result in an attacker-supplied pointer being freed.
Successful exploitation may potentially allow execution of arbitrary code.
This vulnerability has been reported in versions 2.2.7 and 2.2.8.
5) A boundary error within the imapmagicplus support can be exploited to cause a buffer overflow and may allow execution of arbitrary code.
This vulnerability has been reported in version 2.2.9 and prior.
6) An off-by-one error within the "mysasl_canon_user()" function in the SASL component can be exploited to cause a buffer overflow via an overly long username.
Successful exploitation allows execution of arbitrary code.
This vulnerability has been reported in version 2.2.9 and prior.
Solution:
Update to version 2.2.10 or later.
ftp://ftp.andrew.cmu.edu/pub/cyrus-mail/
Provided and/or discovered by:
1-4) Stefan Esser, e-matters.
5+6) Sebastian Krahmer
Changelog:
2004-11-25: Added another CVE-reference.
2004-12-10: Added information about two more vulnerabilities and updated "Solution" section.
Original Advisory:
http://security.e-matters.de/advisories/152004.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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2 Related Secunia Security Advisories
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1. Cyrus IMAP Server Buffer Overflow Vulnerabilities
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2. Cyrus IMAP Server buffer overflow
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