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Information Exposure The advisory has been revoked - it doesn't affect any version of package gnutls28 Open this link in a new tab

    Threat Intelligence

    EPSS 0.05% (17th percentile)
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NVD
5.6 medium
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SUSE
5.3 medium
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Red Hat
4.7 medium

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  • Snyk ID SNYK-UBUNTU1604-GNUTLS28-340582
  • published 3 Dec 2018
  • disclosed 3 Dec 2018
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Introduced: 3 Dec 2018

CVE-2018-16868 Open this link in a new tab
CWE-203 Open this link in a new tab

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Ubuntu.

A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.