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Gentoo Linux Security Advisory GLSA 201801-11 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: PySAML2: Security bypass |
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Date: January 11, 2018 |
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Bugs: #644016 |
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ID: 201801-11 |
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Synopsis |
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======== |
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|
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A vulnerability in PySAML2 might allow remote attackers to bypass |
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authentication. |
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Background |
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========== |
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PySAML2 is a pure python implementation of SAML2 |
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Affected packages |
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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-python/pysaml2 < 4.5.0 >= 4.5.0 |
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Description |
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=========== |
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It was found that the PySAML2 relies on an assert statement to check |
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the user's password. A python optimizations might remove this |
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assertion. |
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Impact |
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====== |
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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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Workaround |
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========== |
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Disable python optimizations. |
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Resolution |
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========== |
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All PySAML2 users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-python/pysaml2-4.5.0" |
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References |
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========== |
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[ 1 ] CVE-2017-1000433 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000433 |
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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/201801-11 |
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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 2018 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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