PT-2018-11176 · Google · Boringssl

Published 2018-06-15 · Updated 2018-08-06 · CVE-2018-12440

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions BoringSSL versions prior to 2018-06-14

Description The issue allows a memory-cache side-channel attack on DSA signatures, also known as the Return Of the Hidden Number Problem or ROHNP. An attacker can discover a DSA key if they have access to either the local machine or a different virtual machine on the same physical host.

Recommendations For versions prior to 2018-06-14, update to a version released after 2018-06-14 to resolve the issue.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2018-12440

Affected Products

Boringssl

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2018-12440 · Security Note
• https://osv.dev/vulnerability/CVE-2018-12440 · Vendor Advisory
• https://nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem · Note