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Insecure Library Loading
Highly critical

Evolution iCalendar Two Buffer Overflow Vulnerabilities

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Release Date:  2008-06-04    Last Update:  2009-05-27    Views:  7,393

Secunia Advisory SA30298

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Secunia Research has discovered two vulnerabilities in Evolution, which can be exploited by malicious people to compromise a user's system.

1) A boundary error exists when parsing timezone strings contained within iCalendar attachments. This can be exploited to overflow a static buffer via an overly long timezone string.

Successful exploitation allows execution of arbitrary code, but requires that the ITip Formatter plugin is disabled.

2) A boundary error exists when replying to an iCalendar request while in calendar view. This can be exploited to cause a heap-based buffer overflow via an overly long "DESCRIPTION" property included in an iCalendar attachment.

Successful exploitation allows execution of arbitrary code, but requires that the user accepts the iCalendar request and replies to it from the "Calendars" window.

The vulnerabilities are confirmed in version 2.22.1. Other versions may also be affected.


Solution:
Update to version 2.26.2.

Provided and/or discovered by:
Alin Rad Pop, Secunia Research

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2008-22/
http://secunia.com/secunia_research/2008-23/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Evolution iCalendar Two Buffer Overflow Vulnerabilities

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