Is CVE-2023-45239 in the CISA KEV catalog?

No. CVE-2023-45239 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-45239?

CVE-2023-45239 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-45239?

CVE-2023-45239 has an EPSS score of 1.81% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-45239?

Upgrade tac plus to 2023-10-05 or later.

CVE & CISA-KEV Catalog

CVE-2023-45239

CRITICALEPSS 76th pctl

9.8

CVSS v3

NVD

Description

A lack of input validation exists in tac_plus prior to commit 4fdf178 which, when pre or post auth commands are enabled, allows an attacker who can control the username, rem-addr, or NAC address sent to tac_plus to inject shell commands and gain remote code execution on the tac_plus server.

CWE-790

How to fix

Remediation Available

tac plusNVD

Affected:< 2023-10-05Fixed in:2023-10-05CVE-2023-45239derived 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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.81%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Third-Party Advisory1

lists.fedoraproject.org

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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.