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TITLE:
Tor Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA42907

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42907/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42907

RELEASE DATE:
2011-01-19

DISCUSS ADVISORY:
http://secunia.com/advisories/42907/#comments

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

http://secunia.com/advisories/42907/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=42907

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

http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A weakness and two vulnerabilities have been reported in Tor, which
can be exploited by malicious, local users to disclose potentially
sensitive information, and by malicious people to cause a DoS (Denial
of Service) and potentially compromise a user's system.

1) An unspecified error can be exploited to cause a heap-based memory
corruption.

2) An error within the handling of zlib-compressed data can be
exploited to cause a DoS by sending specially crafted compressed
data.

3) Various functions do not properly clear keys from memory before
freeing them, which may lead to the disclosure of the keys.

The weakness and the vulnerabilities are reported in versions prior
to 0.2.1.29.

SOLUTION:
Update to version 0.2.1.29.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) debuger
2) doorss
3) cypherpunks

ORIGINAL ADVISORY:
http://blog.torproject.org/blog/tor-02129-released-security-patches
2) https://trac.torproject.org/projects/tor/ticket/2324
3) https://trac.torproject.org/projects/tor/ticket/2384
https://trac.torproject.org/projects/tor/ticket/2385

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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