51536 : TYPO3 System Extension Install Tool Encryption Key Random Seed Weakness
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
17	572	over 3 years ago	6 months ago	3 times	90%

Timeline

Disclosure Date	Vendor Solution Date
2009-01-20	2009-01-20

Description

TYPO3 contains a flaw that may allow a malicious user to crack its encryption key. The System Extension Install Tool creates the key using an insufficiently random seed. It is possible that the flaw may allow the key to be compromised resulting in a loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Cryptographic
Impact: Loss of Confidentiality
Solution: Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Upgrade to version 4.0.10, 4.1.8, 4.2.4 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

TYPO3 Association	TYPO3	4.0.9
		4.1.7
		4.2.3

References

CVE ID: 2009-0255 (see also: NVD)
Bugtraq ID: 33376
Secunia Advisory ID: 33617 33679
ISS X-Force ID: 48132
Vendor Specific Advisory URL: http://bugs.typo3.org/view.php?id=10154
http://forge.typo3.org/issues/19834
http://lists.debian.org/debian-security-announce/2009/msg00019.html
Vendor Specific News/Changelog Entry: http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-001/

Manual Testing Notes

Credit

Chris John Riley - contactc22.cc - Raiffeisen Informatik CERT

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2009-01-23 | Disagree?

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

None found at this time

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