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CVE-2022-28734

8.1 · HIGH

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position.

Published Jul 20, 2023CWE-787EPSS 1.12%

Overview

CVE-2022-28734 is a high-severity vulnerability. It was published on July 20, 2023 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.

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

Refcve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28734Refsecurity.netapp.com/advisory/ntap-20230825-0002/Refwww.openwall.com/lists/oss-security/2022/06/07/5Refcve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28734Refsecurity.netapp.com/advisory/ntap-20230825-0002/Refwww.openwall.com/lists/oss-security/2022/06/07/5

How CyberStrike helps

Frequently asked questions

What is CVE-2022-28734?

CVE-2022-28734 is a high-severity vulnerability. It was published on July 20, 2023 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2022-28734?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-28734?

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-2022-28734?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-28734 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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