CVE-2021-30130 — Improper Verification of Cryptographic Signature in Phpseclib

CWE-347 — Improper Verification of Cryptographic SignatureCWE-295 — Improper Certificate Validation7 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.6%
top 30.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
PhpseclibDebian Php-phpseclibDebian Php-phpseclib3+2 more
Timeline
PublishedApr 6
Latest updateApr 2

Description

phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.

CVSS vector

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

Affected Packages7 packages

▶debiandebian/phpseclib< php-phpseclib 2.0.30-2 (bookworm)
▶NVDphpseclib/phpseclib3.0 — 3.0.7+1
▶Packagistphpseclib/phpseclib3.0.0 — 3.0.7+1
▶debiandebian/php-phpseclib< php-phpseclib 2.0.30-2 (bookworm)
▶debiandebian/php-phpseclib3< php-phpseclib 2.0.30-2 (bookworm)

Also affects: Debian Linux 10.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
phpseclib vulnerabilities↗2025-04-02
▶
GHSA
Improper Certificate Validation in phpseclib↗2021-04-07
▶
OSV
Improper Certificate Validation in phpseclib↗2021-04-07
▶
OSV
CVE-2021-30130: phpseclib before 2↗2021-04-06
▶

📋Vendor Advisories

2
Ubuntu
phpseclib vulnerabilities↗2025-04-02
▶
Debian
CVE-2021-30130: php-phpseclib - phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signatur...↗2021
▶