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Gentoo Linux Security Advisory GLSA 200510-19 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: cURL: NTLM username stack overflow |
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Date: October 22, 2005 |
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Bugs: #109097 |
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ID: 200510-19 |
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Synopsis |
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======== |
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|
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cURL is vulnerable to a buffer overflow which could lead to the |
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execution of arbitrary code. |
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Background |
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========== |
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|
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cURL is a command line tool and library for transferring files via many |
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different protocols. It supports NTLM authentication to retrieve files |
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from Windows-based systems. |
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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/curl < 7.15.0 >= 7.15.0 |
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|
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Description |
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=========== |
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|
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iDEFENSE reported that insufficient bounds checking on a memcpy() of |
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the supplied NTLM username can result in a stack overflow. |
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Impact |
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====== |
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|
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A remote attacker could setup a malicious server and entice an user to |
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connect to it using a cURL client, potentially leading to the execution |
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of arbitrary code with the permissions of the user running cURL. |
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|
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Workaround |
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========== |
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|
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Disable NTLM authentication by not using the --anyauth or --ntlm |
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options when using cURL (the command line version). Workarounds for |
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programs that use the cURL library depend on the configuration options |
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presented by those programs. |
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Resolution |
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========== |
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All cURL users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/curl-7.15.0" |
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References |
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========== |
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[ 1 ] CVE-2005-3185 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3185 |
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[ 2 ] iDefense Security Advisory 10.13.05 |
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http://www.idefense.com/application/poi/display?id=322&type=vulnerabilities |
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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-200510-19.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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|
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Copyright 2005 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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http://creativecommons.org/licenses/by-sa/2.0 |
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