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CVE-2022-28733

Date: July 19, 2023

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.

Language: C

Severity Score

Related Resources (8)

https://people.canonical.com/~ubuntu-security/cve/CVE-2022-28733
https://access.redhat.com/security/cve/CVE-2022-28733
https://www.openwall.com/lists/oss-security/2022/06/07/5
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733
https://security.netapp.com/advisory/ntap-20230825-0002/
https://nvd.nist.gov/vuln/detail/CVE-2022-28733
https://security-tracker.debian.org/tracker/CVE-2022-28733
https://www.mend.io/vulnerability-database/CVE-2022-28733

Severity Score

Weakness Type (CWE)

Integer Underflow (Wrap or Wraparound)

CWE-191

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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