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.
RSA PKCS#1 v1.5 signature verification code does not check for tailing garbage bytes after decoding a DigestInfo ASN.1 structure. This can allow padding bytes to be removed and garbage data added to forge a signature when a low public exponent is being used.
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-forge1.3.0.
For more information
If you have any questions or comments about this advisory:
This PR contains the following updates:
1.2.1->1.3.0GitHub Vulnerability Alerts
CVE-2022-24771
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-forge1.3.0.References
For more information, please see "Bleichenbacher's RSA signature forgery based on implementation error" by Hal Finney.
For more information
If you have any questions or comments about this advisory:
CVE-2022-24772
Impact
RSA PKCS#1 v1.5 signature verification code does not check for tailing garbage bytes after decoding a
DigestInfoASN.1 structure. This can allow padding bytes to be removed and garbage data added to forge a signature when a low public exponent is being used.Patches
The issue has been addressed in
node-forge1.3.0.References
For more information, please see "Bleichenbacher's RSA signature forgery based on implementation error" by Hal Finney.
For more information
If you have any questions or comments about this advisory:
CVE-2022-24773
Impact
RSA PKCS#1 v1.5 signature verification code is not properly checking
DigestInfofor 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-forge1.3.0.For more information
If you have any questions or comments about this advisory:
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