REDHAT-BUG-296371: Input Validation
First published: Wed Sep 19 2007(Updated: )
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: <a href="http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html">http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html</a> CVS commit pointed out by upstream: <a href="http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20&pathrev=Phobos">http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20&pathrev=Phobos</a> (some of the previous commits may be required to get complete checks / fix)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ekiga | ||
| Opal Opal |
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Reference Links
- http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html
- http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20&pathrev=Phobos
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=208511&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=208511&action=edit
- http://rhn.redhat.com/errata/RHSA-2007-0957.html
- https://admin.fedoraproject.org/updates/F7/FEDORA-2007-2245
- https://bugzilla.redhat.com/show_bug.cgi?id=296371
Frequently Asked Questions
What is the severity of REDHAT-BUG-296371?
The severity of REDHAT-BUG-296371 is considered high due to the potential for denial of service.
How do I fix REDHAT-BUG-296371?
To fix REDHAT-BUG-296371, update to the patched version of the Ekiga or Opal library as indicated in the official channels.
What causes the vulnerability identified as REDHAT-BUG-296371?
REDHAT-BUG-296371 is caused by insufficient input validation on the SIP protocol header field 'Content-Length' in the opal library.
Which software is affected by REDHAT-BUG-296371?
REDHAT-BUG-296371 affects the Ekiga application and the Opal library.
Can REDHAT-BUG-296371 be exploited remotely?
Yes, REDHAT-BUG-296371 can be exploited remotely by sending specially crafted SIP messages to the vulnerable application.
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- alias/CVE-2007-4924
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- vendor/ekiga
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- vendor/opal
- canonical/opal opal