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Secunia Security Advisory 47406

Secunia Security Advisory 47406
Posted Dec 30, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in Plone, which can be exploited by malicious people to cause a DoS (Denial of Service).

tags | advisory, denial of service
SHA-256 | 4a2ac19c6da13d24fad94b3772255813440486cb2bb53265c54ecf6462b2d393

Secunia Security Advisory 47406

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TITLE:
Plone Web Form Hash Collision Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA47406

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47406/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47406

RELEASE DATE:
2011-12-29

DISCUSS ADVISORY:
http://secunia.com/advisories/47406/#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/47406/

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=47406

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 vulnerability has been reported in Plone, which can be exploited by
malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within a hash generation
function when hashing form posts and updating a hash table. This can
be exploited to cause a hash collision resulting in high CPU
consumption via a specially crafted form sent in a HTTP POST
request.

The vulnerability is reported in version 4.1.3 and prior.

SOLUTION:
Currently there is no known workaround.

PROVIDED AND/OR DISCOVERED BY:
Alexander Klink, n.runs AG and Julian Wälde, Technische Universität
Darmstadt

ORIGINAL ADVISORY:
n.runs (SA-2011.004):
http://www.nruns.com/_downloads/advisory28122011.pdf

oCERT (#2011-003):
http://www.ocert.org/advisories/ocert-2011-003.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/

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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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