Use of a broken or risky cryptographic algorithm in OpenSSL - CVE-2019-1559

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Main Vulnerability Database Vulnerabilities #VU17860

Use of a broken or risky cryptographic algorithm in OpenSSL - CVE-2019-1559

Published: February 26, 2019 / Updated: June 24, 2022


Vulnerability identifier: #VU17860
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-1559
CWE-ID: CWE-327
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
OpenSSL
Software vendor:
OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to decrypt sensitive information.

The vulnerability exists due to the way an application behaves, when it receives a 0-byte record with invalid padding compared to the record with an invalid MAC, which results in padding oracle. A remote attacker can decrypt data.

Successful exploitation of the vulnerability requires that the application is using "non-stitched" ciphersuites and calls SSL_shutdown() twice (first, via a BAD_RECORD_MAC and again via a CLOSE_NOTIFY). 



Remediation

Install updates from vendor's website.

External links