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


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.61% (79th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSSL-4538228
  • published26 Jul 2021
  • disclosed1 Mar 2016

Introduced: 1 Mar 2016

CVE-2016-0703  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:7 openssl to version 1:1.0.1e-42.el7_1.4 or higher.
This issue was patched in RHSA-2015:0716.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by RHEL. See How to fix? for RHEL: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

CVSS Scores

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