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Insecure Library Loading
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GNU Emacs vcdiff Insecure Temporary Files

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Release Date:  2008-04-21    Views:  8,680

Secunia Advisory SA29905

Where:

Local system

Impact:

Privilege escalation

Solution Status:

Vendor Workaround

CVE Reference(s):

Description


Some security issues have been reported in GNU Emacs, which can be exploited by malicious, local users to perform certain actions with escalated privileges.

The security issues are caused due to the vcdiff utility (lib-src/vcdiff) using temporary files in an insecure manner. This can be exploited via symlink attacks to e.g. overwrite arbitrary files with the privileges of the user running the vcdiff utility.

The security issues are reported in versions 21.4a and 22.2. Other versions may also be affected.


Solution:
Fixed in the CVS repository.

Provided and/or discovered by:
Steve Grubb, Red Hat

Original Advisory:
Red Hat Bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=208483

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: GNU Emacs vcdiff Insecure Temporary Files

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