Is CVE-2023-46239 in the CISA KEV catalog?

No. CVE-2023-46239 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-46239?

CVE-2023-46239 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-46239?

CVE-2023-46239 has an EPSS score of 0.77% (51th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-46239?

Upgrade quic-go to 0.37.3 or later.

CVE & CISA-KEV Catalog

CVE-2023-46239

HIGH

7.5

CVSS v3

NVD

Description

quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.

CWE-248 CWE-476NULL Pointer Dereference

How to fix

Remediation Available

quic-goNVD

Affected:>= 0.37.0, < 0.37.3Fixed in:0.37.3CVE-2023-46239derived 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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.77%probability of exploitation in 30 days

51stpercentile

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

References

Patch2

Release Notes1

github.com

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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.