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CVE-2022-28733

8.1 · HIGH

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value.

Published Jul 20, 2023CWE-191EPSS 1.27%

Overview

CVE-2022-28733 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

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.

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-2022-28733Refsecurity.netapp.com/advisory/ntap-20230825-0002/Refwww.openwall.com/lists/oss-security/2022/06/07/5Refcve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733Refsecurity.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-2022-28733?

CVE-2022-28733 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-2022-28733?

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-2022-28733?

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-2022-28733?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-28733 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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