Is CVE-2018-0733 in the CISA KEV catalog?

No. CVE-2018-0733 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-0733?

CVE-2018-0733 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2018-0733?

CVE-2018-0733 has an EPSS score of 8.61% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-0733?

Upgrade openssl on debian 11 to 1.1.0h-1 or later.

CVE & CISA-KEV Catalog

CVE-2018-0733

MEDIUMEPSS 94th pctl

5.9

CVSS v3

NVD

Description

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).

How to fix

Remediation Available

opensslDebian

Fixed in:1.1.0h-1CVE-2018-0733

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

8.61%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Vendor Advisory1

openssl.org

Third-Party Advisory3

Other references10

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.