CVE-2023-04647.5HighCWE-295

CVE-2023-0464: Excessive Resource Usage Verifying X.509 Policy Constraints

OpenSSL

Vendor fix available · Affected: OpenSSL · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

4.0%probability of exploitation in the next 30 days

90th percentile

050100

Higher than 90% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

OpenSSL · OpenSSLfrom 3.1.0 before 3.1.1; from 3.0.0 before 3.0.9; from 1.1.1 before 1.1.1u; from 1.0.2 before 1.0.2zh

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Certificate Validation · Cryptography
Vendor: OpenSSL
Published: March 2023
Band: Possible (1 to 10%), March 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-0464 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

9 more references are in the CVE record.