Bug 252394 (CVE-2007-4091)

Summary: CVE-2007-4091 rsync off by one flaw
Product: [Other] Security Response Reporter: Josh Bressers <bressers>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2007-08-28 08:08:27 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Josh Bressers 2007-08-15 19:17:40 UTC 
rsync contains an off by one stack overflow flaw.  This flaw can result in a
NULL byte written past the end of the stack variable.


More information is located here:
http://c-skills.blogspot.com/2007/08/cve-2007-4091.html

The patch is here:
http://www.suse.de/%7Ekrahmer/rsync-2.6.9-fname-obo.diff
Comment 1 Josh Bressers 2007-08-15 20:03:44 UTC 
This flaw does not affect Red Hat Enterprise Linux 2.1, 3, or 4 due to the
version of rsync.

This flaw does exist in Red Hat Enterprise Linux 5, but due to the nature of the
flaw, the use of -fstack-protector when building the binary renders this flaw
unexploitable.
Comment 2 Josh Bressers 2007-08-15 20:22:21 UTC 
It should be noted that when running rsync in daemon mode, the daemon spawn a
worker process to handle the connection.  This flaw would not be a denial of
service.