Out-of-bounds Write Affecting grub2-common package, versions <1:2.06-14.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-AMZN2-GRUB2COMMON-5789605
  • published20 Jul 2023
  • disclosed20 Jul 2023

Introduced: 20 Jul 2023

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

How to fix?

Upgrade Amazon-Linux:2 grub2-common to version 1:2.06-14.amzn2 or higher.
This issue was patched in ALAS2-2023-2146.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-common package and not the grub2-common package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux: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.

CVSS Scores

version 3.1