CVE-2022-28733

low-risk
Published 2023-07-20

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10 High
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Gnu

References (6)

Third Party Advisory https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733
https://security.netapp.com/advisory/ntap-20230825-0002/
Mailing List https://www.openwall.com/lists/oss-security/2022/06/07/5
Third Party Advisory https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28733
https://security.netapp.com/advisory/ntap-20230825-0002/
Mailing List https://www.openwall.com/lists/oss-security/2022/06/07/5
29
/ 100
low-risk
Severity 24/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal