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Gentoo Linux Security Advisory GLSA 201709-19 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: Exim: Local privilege escalation |
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Date: September 24, 2017 |
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Bugs: #622212 |
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ID: 201709-19 |
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Synopsis |
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======== |
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|
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A vulnerability in Exim may allow local users to gain root privileges. |
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Background |
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========== |
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|
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Exim is a message transfer agent (MTA) developed at the University of |
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Cambridge for use on Unix systems connected to the Internet. |
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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 mail-mta/exim < 4.89-r1 >= 4.89-r1 |
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|
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Description |
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=========== |
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|
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Exim supports the use of multiple "-p" command line arguments causing a |
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memory leak. This could lead to a stack-clash in user-space and as |
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result the attacker can, "clash" or "smash" the stack or another memory |
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region, or "jump" over the stack guard-page. |
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Impact |
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====== |
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A local attacker could obtain root privileges. |
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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 Exim users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.89-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2017-1000369 |
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https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000369 |
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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/201709-19 |
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|
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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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|
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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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|
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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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