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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="201801-11">
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<title>PySAML2: Security bypass</title>
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<synopsis>A vulnerability in PySAML2 might allow remote attackers to bypass
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authentication.
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</synopsis>
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<product type="ebuild">PySAML2</product>
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<announced>2018-01-11</announced>
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<revised count="2">2018-01-12</revised>
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<bug>644016</bug>
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<access>remote</access>
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<affected>
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<package name="dev-python/pysaml2" auto="yes" arch="*">
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<unaffected range="ge">4.0.2-r3</unaffected>
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<unaffected range="ge">4.5.0</unaffected>
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<vulnerable range="lt">4.0.2-r3</vulnerable>
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<vulnerable range="lt">4.5.0</vulnerable>
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</package>
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</affected>
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<background>
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<p>PySAML2 is a pure python implementation of SAML2</p>
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</background>
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<description>
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<p>It was found that the PySAML2 relies on an assert statement to check the
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user’s password. A python optimizations might remove this assertion.
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</p>
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</description>
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<impact type="normal">
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<p>A remote attacker could bypass security restrictions and access any
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application which is using PySAML2 for authentication.
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</p>
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</impact>
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<workaround>
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<p>Disable python optimizations.</p>
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</workaround>
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<resolution>
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<p>All PySAML2 4.0 users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=dev-python/pysaml2-4.0.2-r3"
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</code>
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<p>All PySAML2 4.5 users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=dev-python/pysaml2-4.5.0"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000433">
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CVE-2017-1000433
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</uri>
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</references>
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<metadata tag="requester" timestamp="2018-01-09T14:46:58Z">whissi</metadata>
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<metadata tag="submitter" timestamp="2018-01-12T01:23:24Z">whissi</metadata>
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</glsa>
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