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Gentoo Linux Security Advisory GLSA 200902-06 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: GNU Emacs, XEmacs: Multiple vulnerabilities |
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Date: February 23, 2009 |
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Bugs: #221197, #236498 |
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ID: 200902-06 |
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Synopsis |
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======== |
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|
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Two vulnerabilities were found in GNU Emacs, possibly leading to |
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user-assisted execution of arbitrary code. One also affects edit-utils |
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in XEmacs. |
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|
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Background |
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========== |
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|
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GNU Emacs and XEmacs are highly extensible and customizable text |
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editors. edit-utils are miscellaneous extensions to XEmacs. |
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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 app-editors/emacs < 22.2-r3 >= 22.2-r3 |
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*>= 21.4-r17 |
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< 19 |
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2 app-xemacs/edit-utils < 2.39 >= 2.39 |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Morten Welinder reports about GNU Emacs and edit-utils in XEmacs: By |
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shipping a .flc accompanying a source file (.c for example) and setting |
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font-lock-support-mode to fast-lock-mode in the source file through |
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local variables, any Lisp code in the .flc file is executed without |
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warning (CVE-2008-2142). |
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|
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Romain Francoise reported a security risk in a feature of GNU Emacs |
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related to interacting with Python. The vulnerability arises because |
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Python, by default, prepends the current directory to the module search |
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path, allowing for arbitrary code execution when launched from a |
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specially crafted directory (CVE-2008-3949). |
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|
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Impact |
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====== |
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|
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Remote attackers could entice a user to open a specially crafted file |
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in GNU Emacs, possibly leading to the execution of arbitrary Emacs Lisp |
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code or arbitrary Python code with the privileges of the user running |
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GNU Emacs or XEmacs. |
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|
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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 GNU Emacs users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-editors/emacs-22.2-r3" |
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All edit-utils users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-xemacs/edit-utils-2.39" |
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References |
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========== |
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[ 1 ] CVE-2008-2142 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2142 |
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[ 2 ] CVE-2008-3949 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3949 |
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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-200902-06.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 2009 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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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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