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CVE-2011-0427

Status Candidate

Overview

Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

Related Files

Gentoo Linux Security Advisory 201110-13
Posted Oct 18, 2011
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201110-13 - Multiple vulnerabilities were found in Tor, the most severe of which may allow a remote attacker to execute arbitrary code. Versions less than 0.2.1.30 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2011-0015, CVE-2011-0016, CVE-2011-0427, CVE-2011-0490, CVE-2011-0491, CVE-2011-0492, CVE-2011-0493, CVE-2011-1924
MD5 | 1ac41d75c08cdf31f32d48188e223f7f
Tor-ramdisk i686 UClibc-based Linux Distribution x86_64 20110119
Posted Jan 20, 2011
Authored by Anthony G. Basile | Site opensource.dyc.edu

Tor-ramdisk is an i686 uClibc-based micro Linux distribution whose only purpose is to host a Tor server in an environment that maximizes security and privacy. Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. Security is enhanced by employing a monolithically compiled GRSEC/PAX patched kernel and hardened system tools. Privacy is enhanced by turning off logging at all levels so that even the Tor operator only has access to minimal information. Finally, since everything runs in ephemeral memory, no information survives a reboot, except for the Tor configuration file and the private RSA key which may be exported/imported by FTP. x86 version.

Changes: This release addresses a heap overflow in tor, which allowed arbitrary remote code execution. Tor was updated to version 0.2.1.29 to address CVE-2011-0427. Busybox was updated to 1.18.2 and the kernel to 2.6.32.28 plus Gentoo's hardened-patches-2.6.32-37.extras.
tags | tool, x86, kernel, peer2peer
systems | linux
advisories | CVE-2011-0427
MD5 | fc0a3a57be41623e7f965642d0436e4f
Tor-ramdisk i686 UClibc-based Linux Distribution x86 20110119
Posted Jan 20, 2011
Authored by Anthony G. Basile | Site opensource.dyc.edu

Tor-ramdisk is an i686 uClibc-based micro Linux distribution whose only purpose is to host a Tor server in an environment that maximizes security and privacy. Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. Security is enhanced by employing a monolithically compiled GRSEC/PAX patched kernel and hardened system tools. Privacy is enhanced by turning off logging at all levels so that even the Tor operator only has access to minimal information. Finally, since everything runs in ephemeral memory, no information survives a reboot, except for the Tor configuration file and the private RSA key which may be exported/imported by FTP. x86 version.

Changes: This release addresses a heap overflow in tor, which allowed arbitrary remote code execution. Tor was updated to version 0.2.1.29 to address CVE-2011-0427. Busybox was updated to 1.18.2 and the kernel to 2.6.32.28 plus Gentoo's hardened-patches-2.6.32-37.extras.
tags | tool, x86, kernel, peer2peer
systems | linux
advisories | CVE-2011-0427
MD5 | 23f7b0eb0950d64cc4213683a9a59a30
TOR Virtual Network Tunneling Tool 0.2.1.29
Posted Jan 18, 2011
Authored by Roger Dingledine | Site tor.eff.org

Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. It also enables software developers to create new communication tools with built-in privacy features. It provides the foundation for a range of applications that allow organizations and individuals to share information over public networks without compromising their privacy. Individuals can use it to keep remote Websites from tracking them and their family members. They can also use it to connect to resources such as news sites or instant messaging services that are blocked by their local Internet service providers (ISPs).

Changes: A remote heap overflow vulnerability that could allow remote code execution was fixed along with other issues.
tags | tool, remote, local, peer2peer
systems | unix
advisories | CVE-2011-0427
MD5 | 1cd4feea84f2b066717b500d090bcf65
Debian Security Advisory 2148-1
Posted Jan 18, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2148-1 - The developers of Tor, an anonymizing overlay network for TCP, found three security issues during a security audit. A heap overflow allowed the execution of arbitrary code, a denial of service vulnerability was found in the zlib compression handling and some key memory was incorrectly zeroed out before being freed. The latter two issues do not yet have CVE identifiers assigned.

tags | advisory, denial of service, overflow, arbitrary, tcp
systems | linux, debian
advisories | CVE-2011-0427
MD5 | 8049c31057799402ba68f2925972f48e
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