Covert Timing Channel Affecting openssl-perl package, versions <1:1.0.2k-16.el7_6.1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.41% (74th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSSLPERL-4902421
  • published26 Jul 2021
  • disclosed25 Oct 2018

Introduced: 25 Oct 2018

CVE-2018-0735  (opens in a new tab)
CWE-385  (opens in a new tab)

How to fix?

Upgrade RHEL:7 openssl-perl to version 1:1.0.2k-16.el7_6.1 or higher.
This issue was patched in RHSA-2019:0483.

NVD Description

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

The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).

CVSS Scores

version 3.1