CVE-2022-28734

moderate-risk
Published 2023-07-20

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.

Do I need to act?

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0.14% 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 (2)

Affected Vendors

Gnu Netapp

References (6)

Third Party Advisory https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28734
Third Party Advisory 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-2022-28734
Third Party Advisory https://security.netapp.com/advisory/ntap-20230825-0002/
Mailing List https://www.openwall.com/lists/oss-security/2022/06/07/5
32
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 7/34 · Low