GNOME Evolution Shared Memo Format String Bug Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1017808
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SecurityTracker URL: http://securitytracker.com/id?1017808
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CVE Reference: CVE-2007-1002
(Links to External Site)
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Date: Mar 22 2007
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Impact: Execution of arbitrary code via network, User access via network
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Advisory: Secunia Research
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Version(s): 2.8.2.1, possibly other versions
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Description: A vulnerability was reported in GNOME Evolution. A remote user can cause arbitrary code to be executed on the target user's system.
A remote user can create a specially crafted shared memo that, when accepted and viewed by the target user, will trigger a format
string flaw in the write_html() function in 'calendar/gui/e-cal-component-memo-preview.c' and execute arbitrary code on the target
user's system. The code will run with the privileges of the target user.
The vendor was notified on March 1, 2007.
Ulf Harnhammar
of Secunia Research discovered this vulnerability.
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Impact: A remote user can create a shared memo that, when accepted and viewed by the target user, will execute arbitrary code on the target user's system.
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Solution: No solution was available at the time of this entry.
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Vendor URL: www.gnome.org/projects/evolution/ (Links to External Site)
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Cause: Input validation error, State error
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Underlying OS: Linux (Any)
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Reported By: Secunia Research <remove-vuln@secunia.com>
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Wed, 21 Mar 2007 12:51:52 +0100
From: Secunia Research <remove-vuln@secunia.com>
Subject: [Full-disclosure] Secunia Research: Evolution Shared Memo
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======================================================================
Secunia Research 21/03/2007
- Evolution Shared Memo Categories Format String Vulnerability -
======================================================================
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
Evolution 2.8.2.1
NOTE: Other versions may also be affected.
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2) Severity
Rating: Moderately Critical
Impact: System access
DoS
Where: Remote
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3) Vendor's Description of Software
"Evolution provides integrated mail, addressbook and calendaring
functionality to users of the GNOME desktop."
Product Link:
http://www.gnome.org/projects/evolution/
======================================================================
4) Description of Vulnerability
Secunia Research has discovered a vulnerability in Evolution, which
can be exploited by malicious people to potentially compromise a
vulnerable system.
A format string error in the "write_html()" function in calendar/gui/
e-cal-component-memo-preview.c when displaying a memo's categories
can potentially be exploited to execute arbitrary code via a specially
crafted shared memo containing format specifiers.
Successful exploitation requires that the user opens a shared memo in
their mailbox, clicks on "Accept", and views the memo under the "Memo"
tab.
NOTE: The categories are not displayed in the mailbox view of a shared
memo.
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5) Solution
Do not open untrusted shared memos.
Various Linux vendors will issue patched versions soon.
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6) Time Table
01/03/2007 - Vendor notified (Red Hat and the vendor-sec list).
03/03/2007 - Vendor response.
21/03/2007 - Public disclosure.
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7) Credits
Discovered by Ulf Harnhammar, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2007-1002 for the vulnerability.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://corporate.secunia.com/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.
http://secunia.com/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://corporate.secunia.com/secunia_research/33/
Secunia regularly hires new skilled team members. Check the URL below to
see currently vacant positions:
http://secunia.com/secunia_vacancies/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
======================================================================
10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-44/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
======================================================================
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
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