statem/statem_dtls.c in the DTLS implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted DTLS messages.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-6308 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 2.6 |
---|---|
Base Metrics | AV:N/AC:H/Au:N/C:N/I:N/A:P |
Access Vector | Network |
Access Complexity | High |
Authentication | None |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | Partial |
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 3.7 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
Attack Vector | Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity Impact | None |
Availability Impact | Low |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat JBoss Web Server 3.0 | openssl | Not affected |
Red Hat JBoss EWS 2 | openssl | Not affected |
Red Hat JBoss EWS 1 | openssl | Not affected |
Red Hat JBoss EAP 6 | openssl | Not affected |
Red Hat JBoss EAP 5 | openssl | Not affected |
Red Hat Enterprise Linux 7 | openssl098e | Not affected |
Red Hat Enterprise Linux 7 | openssl | Not affected |
Red Hat Enterprise Linux 6 | openssl | 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 |
Red Hat Enterprise Linux 4 | openssl | Not affected |