Bugzilla Bug 102051

* SITIC Vulnerability Advisory *   
   
           Advisory Name: Evolution multiple remote format string bugs   
       Advisory Reference: SA05-001   
  Date of initial release: 2005-08-10   
                  Product: Evolution 1.5, 2.0, 2.1, 2.2, 2.3   
                 Platform: Linux, BSD systems, Unix   
                   Effect: Remote code execution   
 Vulnerability Identifier: Not assigned   
   
Overview:   
   
Evolution suffers from several format string bugs when handling data from   
 remote sources. These bugs lead to crashes or the execution of arbitrary   
 assembly language code.   
   
Details:   
   
1) The first format string bug occurs when viewing the full vCard data   
 attached to an e-mail message.   
   
When opening an e-mail message, only a compact view of some of the fields   
 from the vCard is displayed, and this does not trigger the vulnerability.   
 To be affected, the user must click on Show Full vCard or perform similar   
 actions such as clicking on Save in Addressbook and then viewing the saved   
 data under the Contacts tab.   
   
Why is this important? An attacker might notice that an organisation uses   
 Evolution, for instance after seeing the "X-Mailer: Evolution x.y.z" e-mail   
 header in their e-mails. He or she could then send out e-mail messages with   
 malicious vCards to many e-mail accounts at the organisation, in the hope   
 that some of the recipients will view the full vCard data sooner or later,   
 thus exposing the organisation to this format string bug.   
   
2) The second format string bug occurs when displaying contact data from   
 remote LDAP servers.   
   
3) The third format string bug occurs when displaying task list data from   
 remote servers.   
   
4) The fourth, and least serious, format string bug occurs when the user   
 goes to the Calendars tab to save task list data that is vulnerable to   
 problem 3 above. Other calendar entries that do not come from task lists   
 are also affected.   
   
Mitigating factors:   
   
Users that never use any of the vulnerable features in Evolution are not   
 affected.   
   
Affected versions:   
   
  o Evolution 1.5 to Evolution 2.3.6.1   
   
Recommendations:   
   
We recommend that users either upgrade to Evolution 2.3.7 (unstable) or   
 apply our unofficial patch to their Evolution installation.   
   
Patch information:   
   
Evolution 2.3.7 is available from the following source:   
   
  o http://ftp.gnome.org/pub/gnome/sources/evolution/   
   
Our unofficial patch is available from our home page:   
   
  o http://www.sitic.se   
   
Acknowledgments:   
   
These vulnerabilities were discovered by Ulf Harnhammar for SITIC, Swedish   
 IT Incident Centre.

obz, liquidx: please bump or apply proposed fix.

Pulling in the rest of the Gnome herd.
We're late on this one, please bump evolution with proposed patch or advise.

Heres the link to the patch for reference, its a tad difficult to find on the
site.

http://www.sitic.se/eng/advisories_and_recommendations/sa05-001.html
http://www.sitic.se/dokument/evolution.formatstring.patch

patched, tested patch / compile, committed as:
evolution-2.2.3-r3.ebuild

Arches, please test evolution-2.2.3-r3 and mark stable, thanks.

Stable on SPARC.

Stable on hppa

This is CAN-2005-2550,
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2550

No, it's CAN-2005-2549 and CAN-2005-2550.

// Ulf Harnhammar

Hui, the VIPs are watching us :)
Thanks for the headsup!

Stable on amd64

Stable on the almighty alpha architecture !

Cheers,
Ferdy

Stable on ppc.

All security covered arches marked stable, should be ready for GLSA

Stable on ia64.

GLSA 200508-12. Thanks to everbody who helped.