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Out-of-bounds Write Affecting grub2-arm64-efi package, versions <2.04-150200.9.63.2

medium

Snyk CVSS

    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 0.05% (16th percentile)
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NVD
7 high
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SUSE
7 high
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Red Hat
7 high

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  • Snyk ID SNYK-SLES152-GRUB2ARM64EFI-2870948
  • published 15 Jun 2022
  • disclosed 14 Jun 2022
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Introduced: 14 Jun 2022

CVE-2022-28734 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade SLES:15.2 grub2-arm64-efi to version 2.04-150200.9.63.2 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:15.2 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.

References