Bug 296371 (CVE-2007-4924)

Summary: CVE-2007-4924 ekiga remote crash caused by insufficient input validation
Product: [Other] Security Response Reporter: Tomas Hoger <thoger>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: kreilly, veillard
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-12-20 12:18:26 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 297551, 297561, 310471, 310481, 833946    
Bug Blocks:    
Attachments:
Description Flags
Patch backported from CVS. none

Description Tomas Hoger 2007-09-19 14:17:00 UTC 
José Miguel Esparza discovered that insufficient input validation is performed
on SIP protocol header field 'Content-Length' by opal library used by ekiga. 
This flaw can be used to write '\0' byte to attacker-controlled address and
crash ekiga.  Ekiga 2.0.10 using opal library 2.2.10 was released to address
this issue.

Ekiga 2.0.10 release notes:
http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html

CVS commit pointed out by upstream:
http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20&pathrev=Phobos
(some of the previous commits may be required to get complete checks / fix)
Comment 4 Tomas Hoger 2007-09-27 15:18:20 UTC 
Created attachment 208511 [details]
Patch backported from CVS.
Comment 9 Tomas Hoger 2007-12-20 12:18:26 UTC 
Fixed in affected products:

Red Hat Enterprise Linux:  	
  http://rhn.redhat.com/errata/RHSA-2007-0957.html

Fedora:
  https://admin.fedoraproject.org/updates/F7/FEDORA-2007-2245