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CVE-2016-2053

4.7 · MEDIUM

The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key, leading to mi…

Published May 2, 2016CWE-310EPSS 0.47%

Overview

CVE-2016-2053 is a medium-severity vulnerability. It was published on May 2, 2016 and has a CVSS 3.0 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key, leading to mishandling by the public_key_verify_signature function in crypto/asymmetric_keys/public_key.c.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0d62e9dd6da45bbf0f33a8617afc5fe774c8f45fReflists.opensuse.org/opensuse-security-announce/2016-06/msg00044.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00003.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00007.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00008.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00009.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-2053?

CVE-2016-2053 is a medium-severity vulnerability. It was published on May 2, 2016 and has a CVSS 3.0 base score of 4.7 (MEDIUM).

How severe is CVE-2016-2053?

This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2016-2053?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-2053?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-2053 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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