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Gentoo Linux Security Advisory GLSA 200411-07 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Proxytunnel: Format string vulnerability |
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Date: November 03, 2004 |
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Bugs: #69379 |
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ID: 200411-07 |
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Synopsis |
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======== |
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|
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Proxytunnel is vulnerable to a format string vulnerability, potentially |
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allowing a remote server to execute arbitrary code with the rights of |
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the Proxytunnel process. |
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|
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Background |
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========== |
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|
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Proxytunnel is a program that tunnels connections to a remote server |
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through a standard HTTPS proxy. |
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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 net-misc/proxytunnel < 1.2.3 >= 1.2.3 |
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|
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Description |
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=========== |
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|
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Florian Schilhabel of the Gentoo Linux Security Audit project found a |
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format string vulnerability in Proxytunnel. When the program is started |
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in daemon mode (-a [port]), it improperly logs invalid proxy answers to |
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syslog. |
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|
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Impact |
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====== |
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|
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A malicious remote server could send specially-crafted invalid answers |
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to exploit the format string vulnerability, potentially allowing the |
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execution of arbitrary code on the tunnelling host with the rights of |
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the Proxytunnel process. |
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|
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Workaround |
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========== |
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You can mitigate the issue by only allowing connections to trusted |
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remote servers. |
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Resolution |
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========== |
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All Proxytunnel users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/proxytunnel-1.2.3" |
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|
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References |
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========== |
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[ 1 ] CAN-2004-0992 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0992 |
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[ 2 ] Proxytunnel News |
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http://proxytunnel.sourceforge.net/news.html |
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|
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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-200411-07.xml |
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|
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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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|
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License |
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======= |
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|
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Copyright 2004 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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|
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http://creativecommons.org/licenses/by-sa/1.0 |
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