Because of an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered as authenticated in an amount of tries lower than that guaranteed by the security claims of the scheme. The module can only be compiled by the HP-UX assembler, so that only HP-UX PA-RISC targets are affected. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g).
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published: 2018-03-27T21:00:00Z

Updated: 2024-09-16T20:46:46.842Z

Reserved: 2017-11-30T00:00:00

Link: CVE-2018-0733

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-03-27T21:29:00.610

Modified: 2023-11-07T02:51:05.120

Link: CVE-2018-0733

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-03-27T00:00:00Z

Links: CVE-2018-0733 - Bugzilla