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Gentoo Linux Security Advisory GLSA 200707-14 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: tcpdump: Integer overflow |
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Date: July 28, 2007 |
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Bugs: #184815 |
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ID: 200707-14 |
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|
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Synopsis |
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======== |
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|
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A vulnerability has been discovered in tcpdump, allowing for the |
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execution of arbitrary code, possibly with root privileges. |
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|
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Background |
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========== |
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|
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tcpdump is a tool for capturing and inspecting network traffic. |
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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-analyzer/tcpdump < 3.9.5-r3 >= 3.9.5-r3 |
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|
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Description |
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=========== |
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|
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mu-b from Digital Labs discovered that the return value of a snprintf() |
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call is not properly checked before being used. This could lead to an |
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integer overflow. |
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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 send specially crafted BGP packets on a network |
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being monitored with tcpdump, possibly resulting in the execution of |
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arbitrary code with the privileges of the user running tcpdump, which |
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is usually root. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All tcpdump users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.9.5-r3" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-3798 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3798 |
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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-200707-14.xml |
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|
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Concerns? |
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========= |
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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 2007 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/2.5 |