Sze Yiu Chau

The issue is related to inappropriate implementation in ChromeOS Networking, allowing a remote attacker with a rogue wireless access point to potentially carry out a wifi impersonation attack via a crafted ONC file. This could enable the attacker to gain privileged access to the infrastructure.

The issue concerns the RSA implementation in the verify signed hash() function, which fails to verify the padding string value during PKCS#1 v1.5 signature verification. This allows a remote attacker to forge signatures, particularly when small public exponents are used. The IKEv2 signature verification is affected when RAW RSA keys are used.

The issue is related to a security problem, but specific details are not provided.

Name of the Vulnerable Software and Affected Versions: strongSwan versions 4.x through 5.x before 5.7.0 Description: The issue is related to the verify emsa pkcs1 signature() function in the gmp plugin, which does not correctly verify cryptographic signatures. This can allow a remote attacker to forge signatures when small public exponents are used, potentially leading to impersonation when only an RSA signature is used for IKEv2 authentication. Recommendations: For strongSwan versions 4.x through 5.x before 5.7.0, update to version 5.7.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of small public exponents in RSA signatures until a patch is available.