vulnerability

Amazon Linux 2023: CVE-2021-43565: Important priority package update for amazon-ssm-agent

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Dec 2, 2021
Added
Feb 17, 2025
Modified
Dec 4, 2025

Description

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an attacker to panic an SSH server.
There's an input validation flaw in golang.org/x/crypto's readCipherPacket() function. An unauthenticated attacker who sends an empty plaintext packet to a program linked with golang.org/x/crypto/ssh could cause a panic, potentially leading to denial of service.

Solutions

amazon-linux-2023-upgrade-amazon-ssm-agentamazon-linux-2023-upgrade-amazon-ssm-agent-debuginfoamazon-linux-2023-upgrade-amazon-ssm-agent-debugsource
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