PT-2022-21907 · Amazon · Hotpatch

Published 2022-06-17 · Updated 2022-07-05 · CVE-2022-33915

Mitre

CVSS v3.1

7.0

High

Base vector

AC:H/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N

Versions of the Amazon AWS Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.3.5 are affected by a race condition that could lead to a local privilege escalation. This Hotpatch package is not a replacement for updating to a log4j version that mitigates CVE-2021-44228 or CVE-2021-45046; it provides a temporary mitigation to CVE-2021-44228 by hotpatching the local Java virtual machines. To do so, it iterates through all running Java processes, performs several checks, and executes the Java virtual machine with the same permissions and capabilities as the running process to load the hotpatch. A local user could cause the hotpatch script to execute a binary with elevated privileges by running a custom java process that performs exec() of an SUID binary after the hotpatch has observed the process path and before it has observed its effective user ID.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2022-33915

Affected Products

Hotpatch

References · 5

• https://osv.dev/vulnerability/CVE-2022-33915 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-33915 · Security Note
• https://alas.aws.amazon.com/AL2/ALAS-2022-1806.html · Vendor Advisory
• https://alas.aws.amazon.com/ALAS-2022-1601.html · Vendor Advisory
• https://t.me/cibsecurity/44725 · Telegram Post