It was found that NSS permitted skipping of the ServerKeyExchange packet during a handshake involving ECDHE (Elliptic Curve Diffie-Hellman key Exchange). A remote attacker could use this flaw to bypass the forward-secrecy of a TLS/SSL connection.
Find out more about CVE-2015-2721 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 5 (nss) | RHSA-2015:1664 | 2015-08-24 |
| Red Hat Enterprise Linux 6 (nss) | RHSA-2015:1185 | 2015-06-25 |
| Red Hat Enterprise Linux 7 (nss) | RHSA-2015:1185 | 2015-06-25 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | openssl | Not affected |
| Red Hat Enterprise Linux 7 | gnutls | Not affected |
| Red Hat Enterprise Linux 6 | openssl | Not affected |
| Red Hat Enterprise Linux 6 | gnutls | Not affected |
| Red Hat Enterprise Linux 5 | openssl | Not affected |
| Red Hat Enterprise Linux 5 | gnutls | Not affected |
Vulmon