PT-2019-3138 · Openssl+1 · Openssl+1
Rich Mirch
·
Published
2019-07-30
·
Updated
2026-04-27
·
CVE-2019-1552
CVSS v3.1
3.3
Low
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
OpenSSL versions 1.0.2 through 1.0.2s
OpenSSL versions 1.1.0 through 1.1.0k
OpenSSL versions 1.1.1 through 1.1.1c
Description
The issue is related to errors in the certificate authentication procedure. It allows an attacker to impact data integrity. The problem arises from the default directory tree where OpenSSL finds configuration files and certificates for TLS verification, referred to as OPENSSLDIR. This directory's default location can be world-writable, enabling untrusted users to modify OpenSSL's configuration, insert CA certificates, or replace engine modules. The estimated severity of this issue is low due to the limited scope of affected deployments.
Recommendations
For OpenSSL versions 1.0.2 through 1.0.2s, update to version 1.0.2t to resolve the issue.
For OpenSSL versions 1.1.0 through 1.1.0k, update to version 1.1.0l to resolve the issue.
For OpenSSL versions 1.1.1 through 1.1.1c, update to version 1.1.1d to resolve the issue.
As a temporary workaround, consider restricting access to the default OPENSSLDIR to prevent untrusted users from modifying the configuration.
Exploit
Fix
Improper Certificate Validation
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Openssl