Is CVE-2023-49316 in the CISA KEV catalog?

No. CVE-2023-49316 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-49316?

CVE-2023-49316 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-49316?

CVE-2023-49316 has an EPSS score of 0.76% (51th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-49316?

Upgrade php-phpseclib3 on debian 12 to 3.0.19-1+deb12u1 or later.

CVE & CISA-KEV Catalog

CVE-2023-49316

HIGH

7.5

CVSS v3

NVD

Description

In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service.

CWE-834

How to fix

Remediation Available

php-phpseclib3Debian

Fixed in:3.0.19-1+deb12u1CVE-2023-49316

Fixed in:3.0.34-1CVE-2023-49316

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

0.76%probability of exploitation in 30 days

51stpercentile

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

References

Patch1

github.com

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.