exploit the possibilities

Secunia Security Advisory 47506

Secunia Security Advisory 47506
Posted Jan 15, 2012
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A security issue has been reported in Tahoe-LAFS, which can be exploited by malicious people to manipulate certain data.

tags | advisory
MD5 | 3f762fb0802985e9af14444d2ead5aaf

Secunia Security Advisory 47506

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TITLE:
Tahoe-LAFS Integrity Check Logic Error Security Issue

SECUNIA ADVISORY ID:
SA47506

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47506/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47506

RELEASE DATE:
2012-01-13

DISCUSS ADVISORY:
http://secunia.com/advisories/47506/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/47506/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=47506

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been reported in Tahoe-LAFS, which can be
exploited by malicious people to manipulate certain data.

The security issue is caused due to a logic error within the
integrity checking of the mutable downloader, which can be exploited
to deliver manipulated shares to a client without triggering an
integrity failure.

Successful exploitation requires that the attacker is able to provide
multiple shares in a certain order to a client (e.g. controls one or
more storage servers).

The security issue is reported in version 1.9.0.

SOLUTION:
Update to version 1.9.1.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor (Kevan Carstensen).

ORIGINAL ADVISORY:
https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1654
https://tahoe-lafs.org/pipermail/tahoe-announce/2012-January/000033.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

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

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

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