TLS1.2 was mentioned vulnerable to
Raccoon Attack: Researchers Find A Vulnerability in TLS 1.2 - Hashed Out by The SSL Storeā¢
Is PAM that uses TLS1.2 affected by this vulnerability?
PAM 4.2.x
PAM 4.2 versions are not affected by Raccon Attack (CVE-2020-1968) vulnerability.
According to CVE-2020-1968 published documentation, this issue only impacts DH ciphersuites and not ECDH ciphersuites. There is no DH ciphersuites being used for TLS 1.2 Ciphers.