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GLSA
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PostPosted: Wed Jun 07, 2006 7:26 pm    Post subject: [ GLSA 200606-04 ] Tor: Several vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: Tor: Several vulnerabilities (GLSA 200606-04)
Severity: normal
Exploitable: remote
Date: June 07, 2006
Updated: September 05, 2006
Bug(s): #134329
ID: 200606-04

Synopsis

Tor is vulnerable to a possible buffer overflow, a Denial of Service, information disclosure and information leak.

Background

Tor is an implementation of second generation Onion Routing, a connection-oriented anonymizing communication service.

Affected Packages

Package: net-misc/tor
Vulnerable: < 0.1.1.20
Unaffected: >= 0.1.1.20
Unaffected: >= 0.1.0.18 < 0.1.0.19
Architectures: All supported architectures


Description

Some integer overflows exist when adding elements to the smartlists. Non-printable characters received from the network are not properly sanitised before being logged. There are additional unspecified bugs in the directory server and in the internal circuits.

Impact

The possible buffer overflow may allow a remote attacker to execute arbitrary code on the server by sending large inputs. The other vulnerabilities can lead to a Denial of Service, a lack of logged information, or some information disclosure.

Workaround

There is no known workaround at this time.

Resolution

All Tor users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose net-misc/tor


References

CVE-2006-0414
Tor ChangeLog


Last edited by GLSA on Wed Sep 06, 2006 4:18 am; edited 3 times in total
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