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CVE-2018-0733 Affecting openssl package, versions <1.1.0h-1

Severity

 Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
1.04% (85th percentile)

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  • Snyk IDSNYK-DEBIAN10-OPENSSL-374731
  • published27 Mar 2018
  • disclosed27 Mar 2018
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Introduced: 27 Mar 2018

CVE-2018-0733  (opens in a new tab)

How to fix?

Upgrade Debian:10 openssl to version 1.1.0h-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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).

References