An integer underflow flaw leading to a buffer over-read was found in the way OpenSSL parsed TLS session tickets. A remote attacker could use this flaw to crash a TLS server using OpenSSL if it used SHA-512 as HMAC for session tickets.
Find out more about CVE-2016-6302 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
| CVSS3 Base Score | 5.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat JBoss Core Services on RHEL 6 Server | RHSA-2018:2186 | 2018-07-12 |
| Red Hat Enterprise Linux 6 (openssl) | RHSA-2016:1940 | 2016-09-27 |
| Red Hat JBoss Core Services 1 | RHSA-2018:2187 | 2018-07-12 |
| Red Hat Enterprise Linux 7 (openssl) | RHSA-2016:1940 | 2016-09-27 |
| Red Hat JBoss Core Services on RHEL 7 Server | RHSA-2018:2185 | 2018-07-12 |
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss Web Server 3.0 | openssl | Fix deferred |
| Red Hat JBoss EWS 2 | openssl | Will not fix |
| Red Hat JBoss EWS 1 | openssl | Will not fix |
| Red Hat JBoss EAP 6 | openssl | Will not fix |
| Red Hat Enterprise Linux 7 | openssl098e | Not affected |
| Red Hat Enterprise Linux 7 | OVMF | Not affected |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected |
| Red Hat Enterprise Linux 5 | openssl | Not affected |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected |
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