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Gentoo Linux Security Advisory GLSA 201706-07 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: Libtirpc and RPCBind: Denial of Service |
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Date: June 06, 2017 |
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Bugs: #617472 |
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ID: 201706-07 |
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Synopsis |
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======== |
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|
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A vulnerability has been found in Libtirpc and RPCBind which may allow |
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a remote attacker to cause a Denial of Service condition. |
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Background |
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========== |
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|
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The RPCBind utility is a server that converts RPC program numbers into |
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universal addresses. |
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Libtirpc is a port of Suns Transport-Independent RPC library to Linux. |
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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-nds/rpcbind < 0.2.4-r >= 0.2.4-r |
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2 net-libs/libtirpc < 1.0.1-r1 >= 1.0.1-r1 |
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------------------------------------------------------------------- |
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2 affected packages |
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Description |
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=========== |
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|
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It was found that due to the way RPCBind uses libtirpc (libntirpc), a |
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memory leak can occur when parsing specially crafted XDR messages. |
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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 thousands of messages to RPCBind, possibly |
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resulting in a Denial of Service condition. |
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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 RPCBind users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-nds/rpcbind-0.2.4-r" |
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All Libtirpc users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-libs/libtirpc-1.0.1-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2017-8779 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8779 |
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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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https://security.gentoo.org/glsa/201706-07 |
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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 2017 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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