It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.
The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Network_security_services | Mozilla | 3.21 (including) | 3.21.4 (including) |
| Red Hat Enterprise Linux 5 | RedHat | nss-0:3.21.3-2.el5_11 | * |
| Red Hat Enterprise Linux 6 | RedHat | nss-0:3.21.3-2.el6_8 | * |
| Red Hat Enterprise Linux 6 | RedHat | nss-util-0:3.21.3-1.el6_8 | * |
| Red Hat Enterprise Linux 7 | RedHat | nss-0:3.21.3-2.el7_3 | * |
| Red Hat Enterprise Linux 7 | RedHat | nss-util-0:3.21.3-1.1.el7_3 | * |
| Nss | Ubuntu | precise | * |
| Nss | Ubuntu | trusty | * |
| Nss | Ubuntu | upstream | * |
| Nss | Ubuntu | vivid/stable-phone-overlay | * |
| Nss | Ubuntu | xenial | * |