Executive Summary

Summary
Title Tor: Multiple vulnerabilities
Informations
Name GLSA-200904-11 First vendor Publication 2009-04-08
Vendor Gentoo Last vendor Modification 2009-04-08
Severity (Vendor) High Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities in Tor might allow for heap corruption, Denial of Service, escalation of privileges and information disclosure.

Background

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

Description

* Theo de Raadt reported that the application does not properly drop privileges to the primary groups of the user specified via the "User"
configuration option (CVE-2008-5397).

* rovv reported that the "ClientDNSRejectInternalAddresses"
configuration option is not always enforced (CVE-2008-5398).

* Ilja van Sprundel reported a heap-corruption vulnerability that might be remotely triggerable on some platforms (CVE-2009-0414).

* It has been reported that incomplete IPv4 addresses are treated as valid, violating the specification (CVE-2009-0939).

* Three unspecified vulnerabilities have also been reported (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938).

Impact

A local attacker could escalate privileges by leveraging unintended supplementary group memberships of the Tor process. A remote attacker could exploit these vulnerabilities to cause a heap corruption with unknown impact and attack vectors, to cause a Denial of Service via CPU consuption or daemon crash, and to weaken anonymity provided by the service.

Workaround

There is no known workaround at this time.

Resolution

All Tor users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.0.34"

References

[ 1 ] CVE-2008-5397 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5397
[ 2 ] CVE-2008-5398 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5398
[ 3 ] CVE-2009-0414 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0414
[ 4 ] CVE-2009-0936 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0936
[ 5 ] CVE-2009-0937 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0937
[ 6 ] CVE-2009-0938 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0938
[ 7 ] CVE-2009-0939 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0939

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200904-11.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200904-11.xml

CWE : Common Weakness Enumeration

% Id Name
67 % CWE-264 Permissions, Privileges, and Access Controls
33 % CWE-399 Resource Management Errors

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 177

OpenVAS Exploits

Date Description
2009-04-15 Name : Gentoo Security Advisory GLSA 200904-11 (tor)
File : nvt/glsa_200904_11.nasl
2009-02-13 Name : FreeBSD Ports: tor
File : nvt/freebsd_tor4.nasl
2009-02-06 Name : Tor Unspecified Remote Memory Corruption Vulnerability (Linux)
File : nvt/gb_tor_mem_crptn_vuln_lin.nasl
2009-02-06 Name : Tor Unspecified Remote Memory Corruption Vulnerability (Win)
File : nvt/gb_tor_mem_crptn_vuln_win.nasl
2009-02-02 Name : FreeBSD Ports: tor
File : nvt/freebsd_tor3.nasl
2009-01-26 Name : Fedora Core 9 FEDORA-2009-0897 (tor)
File : nvt/fcore_2009_0897.nasl
2009-01-26 Name : Fedora Core 10 FEDORA-2009-0917 (tor)
File : nvt/fcore_2009_0917.nasl
2008-12-31 Name : TOR Privilege Escalation Vulnerability (Linux)
File : nvt/secpod_tor_privilege_escalation_lin.nasl
2008-12-31 Name : TOR Privilege Escalation Vulnerability (Win)
File : nvt/secpod_tor_privilege_escalation_win.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
54024 Tor Incomplete IPv4 Address Spec Conformance Unspecified Issue
54023 Tor Directory Mirrors Malformed Input Exit Node Crash DoS
54022 Tor Directory Mirrors Unspecified DoS
54021 Tor Corrupt Votes Unspecified Infinite Loop DoS
51569 Tor Unspecified Memory Corruption
50442 Tor ClientDNSRejectInternalAddresses Bypass
50441 Tor User/Group Credential Switching Weakness

Nessus® Vulnerability Scanner

Date Description
2009-04-11 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200904-11.nasl - Type : ACT_GATHER_INFO
2009-02-13 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_78f5606bf9d111ddb79c0030843d3802.nasl - Type : ACT_GATHER_INFO
2009-02-01 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_100a9ed2ee5611ddab4f0030843d3802.nasl - Type : ACT_GATHER_INFO
2009-01-26 Name : The remote Fedora host is missing a security update.
File : fedora_2009-0897.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:36:29
  • Multiple Updates