Amazon Linux 2 Security Advisory: ALAS-2024-2484
Advisory Release Date: 2024-02-29 10:03 Pacific
Advisory Updated Date: 2024-03-04 12:00 Pacific
Severity:
Important
Issue Overview:
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. (CVE-2023-40547)
Affected Packages:
shim
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update shim to update your system.
New Packages:
aarch64:
shim-unsigned-aa64-12-1.amzn2.0.4.aarch64
noarch:
shim-unsigned-x64-debuginfo-12-1.amzn2.0.4.noarch
shim-unsigned-aa64-debuginfo-12-1.amzn2.0.4.noarch
src:
shim-12-1.amzn2.0.4.src
x86_64:
shim-unsigned-x64-12-1.amzn2.0.4.x86_64