PT-2021-13863 · Oracle · Openjdk

Jonathan Christison + 1 · Published 2021-10-06 · Updated 2022-10-21 · CVE-2021-20264

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: openjdk versions 1.8 through 11

Description: An insecure modification flaw in the /etc/passwd file allows an attacker with access to the container to modify the /etc/passwd and escalate their privileges. The highest threat from this issue is to confidentiality, integrity, as well as system availability.

Recommendations: For openjdk versions 1.8 through 11, consider restricting access to the /etc/passwd file to minimize the risk of exploitation. As a temporary workaround, limit privileges within the container to prevent escalation. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Incorrect Privilege Assignment

Incorrect Permission

Weakness Enumeration

CWE-266

CWE-732

Related Identifiers

CVE-2021-20264

Affected Products

Openjdk

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-20264 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20264 · Vendor Advisory
• https://t.me/cibsecurity/30069 · Telegram Post
• https://bugzilla.redhat.com/show_bug.cgi?id=1932283 · Note