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Information Exposure Affecting openssl-libs package, versions <1:1.0.1e-42.el7_1.4

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.93% (83rd percentile)
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NVD
5.9 medium
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Red Hat
4.3 medium

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  • Snyk ID SNYK-CENTOS7-OPENSSLLIBS-2045550
  • published 26 Jul 2021
  • disclosed 1 Mar 2016
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Introduced: 1 Mar 2016

CVE-2016-0703 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Centos:7 openssl-libs to version 1:1.0.1e-42.el7_1.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

References