Out-of-bounds Write Affecting grub2-arm64-efi package, versions <2.02-150000.122.12.2


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-SLES150-GRUB2ARM64EFI-2866613
  • published11 Jun 2022
  • disclosed10 Jun 2022

Introduced: 10 Jun 2022

CVE-2022-28734  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 grub2-arm64-efi to version 2.02-150000.122.12.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-arm64-efi package and not the grub2-arm64-efi package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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.

CVSS Scores

version 3.1