Improper Verification of Cryptographic Signature in node-forge

CVE-2022-24771 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

RSA PKCS#1 v1.5 signature verification code is lenient in checking the digest algorithm structure. This can allow a crafted structure that steals padding bytes and uses unchecked portion of the PKCS#1 encoded message to forge a signature when a low public exponent is being used.

Patches

The issue has been addressed in node-forge 1.3.0.

References

For more information, please see
"Bleichenbacher's RSA signature forgery based on implementation error"
by Hal Finney.

For more information

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Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2022-03-18 23:09:54 UTC
Updated
2025-02-12 05:11:06 UTC
GitHub reviewed
2022-03-18 23:09:54 UTC
NVD published
2022-03-18

EPSS Score

Score Percentile
0.13% 32.83%

CVSS Scores

Base score Version Severity Vector
7.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-cfm4-qjh2-4765 ↗
CVE CVE-2022-24771 ↗

CWEs

CWE id Name
CWE-347 Improper Verification of Cryptographic Signature

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm node-forge < 1.3.0 1.3.0 —

References

cvelogic Threat Intelligence