TLS/SSL - CVE-2016-6304 Subscribe to Security Advisories

Monday, July 24, 2017

In September, 2016, released a security advisory detailing a number of security issues. The following vulnerabilities reported in the OpenSSL advisory are addressed in this document that may affect the TLS/SSL data-plane of ACOS devices.

Item Score
# Vulnerability ID Source Score Summary
1 CVE-2016-6304 CVSS 3.0 7.5 High OCSP Status Request extension unbounded memory growth [1, 2]

Affected Releases

The table below indicates releases of ACOS exposed to these vulnerabilities and ACOS releases that address these issues or are otherwise unaffected by them.

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
  4.1.1 (a)
4.1.0 – 4.1.0-P5 4.1.0-P6
2.7.2 – 2.7.2-P10 2.7.2-P11
2.7.1-GR1 – 2.7.1-GR1-P1 2.7.2-P11, 4.1.0-P6, 4.1.1 (a)
2.6.1-GR1 – 2.6.1-GR1-P16 2.7.2-P11, 4.1.0-P6, 4.1.1 (a)

(a) Including all updates to the release(s).

Software Updates 

Software updates that address these vulnerabilities are or will be published at the following URL:

Vulnerability Details

The following table shares brief descriptions for the vulnerabilities addressed in this document.

Vulnerability ID Description
CVE-2016-6304   Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.
Modification History 
April 18, 2018

Created web page

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