Vulnerability in Objective Systems ASN1C C/C++ Compiler

Number: AL16-015
Date: 22 July 2016


The purpose of this alert is to bring attention to a recently disclosed vulnerability in the Objective Systems ASN1C C/C++ compiler.


CCIRC is aware of a recently disclosed vulnerability in the ASN1C C/C++compiler.  Exploitation of this vulnerability could potentially allow a remote unauthenticated attacker to execute arbitrary code on an affected system.

CVE Reference: CVE-2016-5080

Affected Versions: ASN1C C/C++ compiler 7.0 and earlier.

Affected Systems: Any systems with resources compiled by affected versions of the ASN1C C/C++ compiler.

ASN1C is a compiler for the ASN.1 specification, which is used and referenced by multiple telecommunication protocols including GSM, UMTS, LTE, X.509, SNMP, and voice-over-IP.   As a result, the ASN1C compiler is leveraged by several hardware and software products.

Suggested Action

Due to the potential risk presented by this vulnerability, CCIRC recommends that system administrators identify their affected assets and potential interdependencies with their organization’s critical services. As updates become available, their organization’s patch management process should be actioned accordingly.


Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589

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