Covert Timing Channel Affecting openssl-devel package, versions <1:1.0.1k-15.96.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.19% (57th percentile)

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  • Snyk IDSNYK-AMZN201803-OPENSSLDEVEL-1703017
  • published27 Sept 2021
  • disclosed20 Jun 2016

Introduced: 20 Jun 2016

CVE-2016-2178  (opens in a new tab)
CWE-385  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 openssl-devel to version 1:1.0.1k-15.96.amzn1 or higher.
This issue was patched in ALAS-2016-755.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-devel package and not the openssl-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.

References

CVSS Scores

version 3.1