Vulnerability Details : CVE-2022-28733

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.
Published 2023-07-20 01:15:10
Updated 2023-08-25 23:15:09
Source Canonical Ltd.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2022-28733

EPSS FAQ
0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-28733

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
8.1
 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.2
5.9
 NIST
8.1
 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.2
5.9
 Canonical Ltd.

CWE ids for CVE-2022-28733

  • The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@ubuntu.com (Secondary)

References for CVE-2022-28733

Products affected by CVE-2022-28733

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