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Gentoo Linux Security Advisory GLSA 200710-22 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: TRAMP: Insecure temporary file creation |
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Date: October 20, 2007 |
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Bugs: #194713 |
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ID: 200710-22 |
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Synopsis |
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======== |
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|
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The TRAMP package for GNU Emacs insecurely creates temporary files. |
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Background |
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========== |
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|
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TRAMP is a remote file editing package for GNU Emacs, a highly |
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extensible and customizable text editor. |
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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-emacs/tramp < 2.1.10-r2 >= 2.1.10-r2 |
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*< 2.1 |
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|
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Description |
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=========== |
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|
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Stefan Monnier discovered that the tramp-make-tramp-temp-file() |
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function creates temporary files in an insecure manner. |
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|
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Impact |
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====== |
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|
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A local attacker could create symbolic links in the directory where the |
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temporary files are written, pointing to a valid file somewhere on the |
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filesystem that is writable by the user running TRAMP. When TRAMP |
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writes the temporary file, the target valid file would then be |
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overwritten with the contents of the TRAMP temporary file. |
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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 TRAMP users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-emacs/tramp-2.1.10-r2" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-5377 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5377 |
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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-200710-22.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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|
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License |
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======= |
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Copyright 2007 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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