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Gentoo Linux Security Advisory GLSA 201702-01 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: PCSC-Lite: Multiple vulnerabilities |
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Date: February 01, 2017 |
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Bugs: #604574 |
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ID: 201702-01 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in PCSC-Lite, the worst of |
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which could lead to privilege escalation. |
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Background |
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========== |
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|
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PCSC-Lite is a middleware to access a smart card using the SCard API |
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(PC/SC). |
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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 sys-apps/pcsc-lite < 1.8.20 >= 1.8.20 |
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Description |
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=========== |
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|
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The SCardReleaseContext function normally releases resources associated |
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with the given handle (including "cardsList") and clients should cease |
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using this handle. However, a malicious client can make the daemon |
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invoke SCardReleaseContext and continue issuing other commands that use |
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"cardsList", resulting in a use-after-free. When SCardReleaseContext is |
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invoked multiple times it additionally results in a double-free of |
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"cardsList". |
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|
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Impact |
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====== |
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|
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A local attacker could use a malicious client to connect to pcscd's |
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Unix socket, possibly resulting in a Denial of Service condition or |
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privilege escalation since the daemon is running as root. |
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|
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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 PCSC-Lite users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-apps/pcsc-lite-1.8.20" |
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References |
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========== |
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[ 1 ] CVE-2016-10109 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10109 |
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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/201702-01 |
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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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