CVE-2024-27354 — Uncontrolled Resource Consumption in Phpseclib

CWE-400 — Uncontrolled Resource Consumption7 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.2%
top 57.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
PhpseclibDebian Php-phpseclibDebian Php-phpseclib3+2 more
Timeline
PublishedMar 1
Latest updateApr 2

Description

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. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages7 packages

▶debiandebian/phpseclib< php-phpseclib 2.0.42-1+deb12u2 (bookworm)
▶NVDphpseclib/phpseclib1.0.0 — 1.0.23+2
▶Packagistphpseclib/phpseclib1.0.0 — 1.0.23+2
▶debiandebian/php-phpseclib< php-phpseclib 2.0.42-1+deb12u2 (bookworm)
▶debiandebian/php-phpseclib3< php-phpseclib 2.0.42-1+deb12u2 (bookworm)

Also affects: Debian Linux 10.0

🔴Vulnerability Details

4
OSV
phpseclib vulnerabilities↗2025-04-02
▶
OSV
phpseclib a large prime can cause a denial of service↗2024-03-02
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GHSA
phpseclib a large prime can cause a denial of service↗2024-03-02
▶
OSV
CVE-2024-27354: An issue was discovered in phpseclib 1↗2024-03-01
▶

📋Vendor Advisories

2
Ubuntu
phpseclib vulnerabilities↗2025-04-02
▶
Debian
CVE-2024-27354: php-phpseclib - An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3...↗2024
▶