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Gentoo Linux Security Advisory GLSA 200711-26 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: teTeX: Multiple vulnerabilities |
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Date: November 18, 2007 |
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Bugs: #198238 |
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ID: 200711-26 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been discovered in teTeX, possibly |
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allowing to execute arbitrary code or overwrite arbitrary files. |
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|
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Background |
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========== |
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|
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teTeX is a complete TeX distribution for editing documents. |
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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-text/tetex < 3.0_p1-r6 >= 3.0_p1-r6 |
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|
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Description |
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=========== |
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|
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Joachim Schrod discovered several buffer overflow vulnerabilities and |
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an insecure temporary file creation in the "dvilj" application that is |
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used by dvips to convert DVI files to printer formats (CVE-2007-5937, |
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CVE-2007-5936). Bastien Roucaries reported that the "dvips" application |
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is vulnerable to two stack-based buffer overflows when processing DVI |
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documents with long \href{} URIs (CVE-2007-5935). teTeX also includes |
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code from Xpdf that is vulnerable to a memory corruption and two |
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heap-based buffer overflows (GLSA 200711-22); and it contains code from |
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T1Lib that is vulnerable to a buffer overflow when processing an overly |
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long font filename (GLSA 200710-12). |
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|
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Impact |
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====== |
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|
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A remote attacker could entice a user to process a specially crafted |
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DVI or PDF file which could lead to the execution of arbitrary code |
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with the privileges of the user running the application. A local |
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attacker could exploit the "dvilj" vulnerability to conduct a symlink |
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attack to overwrite arbitrary files. |
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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 teTeX users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-text/tetex-3.0_p1-r6" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-5935 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5935 |
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[ 2 ] CVE-2007-5936 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5936 |
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[ 3 ] CVE-2007-5937 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5937 |
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[ 4 ] GLSA 200710-12 |
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http://www.gentoo.org/security/en/glsa/glsa-200710-12.xml |
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[ 5 ] GLSA 200711-22 |
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http://www.gentoo.org/security/en/glsa/glsa-200711-22.xml |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200711-26.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 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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