Resource exhaustion in Phpseclib

CVE-2024-27355

An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. When processing the ASN.1 object identifier of a certificate, a sub identifier may be provided that leads to a denial of service (CPU consumption for decodeOID).

Vulnerability class: DoS (Denial of Service)

EPSS: 0.006 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-27355?
CVE-2024-27355 is a high-severity vulnerability in Phpseclib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2024-03-01.
How severe is CVE-2024-27355?
High severity. CVSS v3 base score is 7.5 out of 10.