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TITLE:
rsync "xattr" Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA29668

VERIFY ADVISORY:
http://secunia.com/advisories/29668/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
rsync 2.x
http://secunia.com/product/2594/
rsync 3.x
http://secunia.com/product/18304/

DESCRIPTION:
A vulnerability has been reported in rsync, which can potentially be
exploited by malicious users to cause a DoS (Denial of Service) or to
compromise a vulnerable system.

The vulnerability is caused due to an integer overflow error within
the extended attributes (xattr) support and can be exploited to cause
a buffer overflow.

Successful exploitation may allow execution of arbitrary code, but
requires that the extended attributes support is enabled.

The vulnerability is reported in version 2.6.9 through 3.0.1.

NOTE: Version 2.6.9 had to be patched to support extended attributes.

SOLUTION:
Update to version 3.0.2 or apply patch.
http://samba.anu.edu.au/rsync/download.html
http://rsync.samba.org/ftp/rsync/security/rsync-3.0.1-xattr-alloc.diff

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Sebastian Krahmer.

ORIGINAL ADVISORY:
http://samba.anu.edu.au/rsync/security.html#s3_0_2
http://www.mail-archive.com/rsync-announce@lists.samba.org/msg00057.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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