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Gentoo Linux Security Advisory GLSA 201309-21 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: klibc: Command Injection |
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Date: September 26, 2013 |
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Bugs: #369075 |
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ID: 201309-21 |
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Synopsis |
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======== |
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|
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A vulnerability in klibc could allow remote attackers to execute |
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arbitrary shell code. |
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Background |
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========== |
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klibc is a minimalistic libc used for making an initramfs. |
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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 dev-libs/klibc < 1.5.25 >= 1.5.25 |
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Description |
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=========== |
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|
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The ipconfig utility in klibc writes DHCP options to |
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/tmp/net-$DEVICE.conf, and this file is later sourced by other scripts |
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to get defined variables. The options written to this file are not |
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properly escaped. |
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Impact |
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====== |
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A remote attacker could send a specially crafted DHCP reply, which |
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could execute arbitrary shell code with the privileges of any process |
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which sources DHCP options. |
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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 klibc users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/klibc-1.5.25" |
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References |
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========== |
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[ 1 ] CVE-2011-1930 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1930 |
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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-201309-21.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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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2013 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/2.5 |
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