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CVE-2020-15158

7.7 · HIGH

In libIEC61850 before version 1.4.3, when a message with COTP message length field with value < 4 is received an integer underflow will happen leading to heap buffer overflow.

Published Aug 26, 2020CWE-119EPSS 2.04%

Overview

CVE-2020-15158 is a high-severity vulnerability. It was published on August 26, 2020 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In libIEC61850 before version 1.4.3, when a message with COTP message length field with value < 4 is received an integer underflow will happen leading to heap buffer overflow. This can cause an application crash or on some platforms even the execution of remote code. If your application is used in open networks or there are untrusted nodes in the network it is highly recommend to apply the patch. This was patched with commit 033ab5b. Users of version 1.4.x should upgrade to version 1.4.3 when available. As a workaround changes of commit 033ab5b can be applied to older versions.

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

GitHubgithub.com/mz-automation/libiec61850/commit/033ab5b6488250c8c3b838f25a7cbc3e099230bbGitHubgithub.com/mz-automation/libiec61850/issues/250GitHubgithub.com/mz-automation/libiec61850/security/advisories/GHSA-pq77-fmf7-hjw8GitHubgithub.com/mz-automation/libiec61850/commit/033ab5b6488250c8c3b838f25a7cbc3e099230bbGitHubgithub.com/mz-automation/libiec61850/issues/250GitHubgithub.com/mz-automation/libiec61850/security/advisories/GHSA-pq77-fmf7-hjw8

How CyberStrike helps

Frequently asked questions

What is CVE-2020-15158?

CVE-2020-15158 is a high-severity vulnerability. It was published on August 26, 2020 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2020-15158?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-15158?

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-2020-15158?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-15158 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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