In September 2016, openssl.org released a security advisory detailing several security issues. The following vulnerabilities that may affect the TLS/SSL data plane of ACOS devices reported in that advisory are addressed in this document.
|Item #||Vulnerability ID||Score Source||Score||Summary|
|1||CVE-2016-6306||CVSS 3.0||5.9 Med||Certificate message OOB reads|
The table below indicates releases of ACOS exposed to these vulnerabilities and ACOS releases that address them. ACOS release families not indicated below are unaffected by these vulnerabilities.
Customers using affected ACOS releases can overcome vulnerability exposures by updating to the indicated resolved release. If the table does not list a corresponding resolved or unaffected release, then no ACOS release update is currently available.
|Releases Affected||Releases Resolved or Unaffected|
|4.1.2 – 4.1.2-P3||4.1.2-P4|
|4.1.1 – 4.1.1-P8||4.1.1-P9|
|4.1.0 – 4.1.0-P11||4.1.0-P12|
|2.7.2 – 2.7.2-P12||2.7.2-P13|
|2.7.1-GR1 – 2.7.1-GR1-Px||2.7.2-P13, 4.1.0-P12, 4.1.1-P9, 4.1.4|
|2.6.1-GR1 – 2.6.1-GR1-P16||2.7.2-P13, 4.1.0-P12, 4.1.1-P9, 4.1.4|
Software updates that address these vulnerabilities are or will be published at the following URL:
The following table shares brief descriptions of the vulnerabilities addressed in this document.
|Vulnerability ID||Vulnerability Description|
In OpenSSL 1.0.2 and earlier some missing message length checks can result in OOB reads of up to 2 bytes beyond an allocated buffer. There is a theoretical DoS risk but this has not been observed in practice on common platforms.
The messages affected are client certificate, client certificate request and server certificate. As a result the attack can only be performed against a client or a server which enables client authentication.
The following table shares brief descriptions for the vulnerabilities addressed in this document.
|Ref #||General Link|
|||NIST NVD, CVE-2016-6306|
|1.0||July 30, 2018||
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