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Gentoo: GLSA-200504-11 High: JunkBuster Multiple Threats

JunkBuster is vulnerable to a heap corruption vulnerability, and under certain configurations may allow an attacker to modify settings.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200504-11 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: JunkBuster: Multiple vulnerabilities Date: April 13, 2005 Bugs: #88537 ID: 200504-11 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= JunkBuster is vulnerable to a heap corruption vulnerability, and under certain configurations may allow an attacker to modify settings. Background ========= JunkBuster is a filtering HTTP proxy, designed to enhance privacy and remove unwanted content. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-proxy/junkbuster < 2.0.2-r3 > = 2.0.2-r3 Description ========== James Ranson reported a vulnerability when JunkBuster is configured to run in single-threaded mode, an attacker can modify the referrer setting by getting a victim to request a specially crafted URL. Tavis Ormandy of the Gentoo Linux Security Audit Team identified a heap corruption issue in the filtering of URLs. Impact ===== If JunkBuster has been configured to run in single-threaded mode, an attacker can disable or modify the filtering of Referrer: HTTP headers, potentially compromising the privacy of users. The heap corruption vulnerability could crash or disrupt the operation of the proxy, potentially executing arbitrary code. Workaround ========= There is no known workaround at thistime. Resolution ========= All JunkBuster users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =www-proxy/junkbuster-2.0.2-r3" Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200504-11 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . Various flaws within PrivacyGuard can jeopardize both confidentiality and operational consistency. It is advised to perform updates for enhanced security.. JunkBuster, Heap Corruption, Gentoo Security, Privacy Threats, Proxy Configuration. . LinuxSecurity.com Team

Apr 13, 2005 Gentoo