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CVE-2020-14308

6.4 · MEDIUM

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size.

Published Jul 29, 2020CWE-190EPSS 0.43%

Overview

CVE-2020-14308 is a medium-severity vulnerability. It was published on July 29, 2020 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

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

Reflists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlReflists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlRefwww.openwall.com/lists/oss-security/2020/07/29/3Refwww.openwall.com/lists/oss-security/2021/09/17/2Refwww.openwall.com/lists/oss-security/2021/09/17/4Refwww.openwall.com/lists/oss-security/2021/09/21/1Refbugzilla.redhat.com/show_bug.cgi?id=1852009Refsecurity.gentoo.org/glsa/202104-05Refsecurity.netapp.com/advisory/ntap-20200731-0008/Refusn.ubuntu.com/4432-1/

How CyberStrike helps

Frequently asked questions

What is CVE-2020-14308?

CVE-2020-14308 is a medium-severity vulnerability. It was published on July 29, 2020 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2020-14308?

This vulnerability has a CVSS 3.1 base score of 6.4, 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-2020-14308?

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-2020-14308?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-14308 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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