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