Is CVE-2023-42448 in the CISA KEV catalog?

No. CVE-2023-42448 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-42448?

CVE-2023-42448 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2023-42448?

CVE-2023-42448 has an EPSS score of 0.78% (51th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42448?

Upgrade hydra to 0.13.0 or later.

CVE & CISA-KEV Catalog

CVE-2023-42448

HIGH

8.1

CVSS v3

NVD

Description

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed (Close transaction), but no such check appears to be performed in the `checkClose` function of the head validator. This would allow a malicious participant to modify the contestation deadline of the head to either allow them to fanout the head without giving another participant the chance to contest, or prevent any participant from ever redistributing the funds locked in the head via a fan-out. Version 0.13.0 contains a patch for this issue.

CWE-20Improper Input Validation CWE-1284

How to fix

Remediation Available

hydraNVD

Affected:< 0.13.0Fixed in:0.13.0CVE-2023-42448derived from NVD

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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

0.78%probability of exploitation in 30 days

51stpercentile

Moderate risk: more likely to be exploited than 51% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Release Notes1

github.com

Product2

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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.