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RSA PKCS#1 v1.5 signature verification leniency in checking `DigestInfo` structure.

Moderate
davidlehn published GHSA-2r2c-g63r-vccr Mar 17, 2022

Package

npm node-forge (npm)

Affected versions

< 1.3.0

Patched versions

1.3.0

Description

Impact

RSA PKCS#1 v1.5 signature verification code is not properly checking DigestInfo for a proper ASN.1 structure. This can lead to successful verification with signatures that contain invalid structures but a valid digest.

Patches

The issue has been addressed in node-forge 1.3.0.

For more information

If you have any questions or comments about this advisory:

Severity

Moderate
5.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVE ID

CVE-2022-24773

Weaknesses