CVE-2021-26291

Description

A flaw was found in maven. Repositories that are defined in a dependency’s Project Object Model (pom), which may be unknown to users, are used by default resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that repository. The highest threat from this vulnerability is to data confidentiality and integrity.

Mitigation

To avoid possible man-in-the-middle related attacks with this flaw, ensure any linked repositories in maven POMs use https and not http.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score7.49.1N/A
Attack VectorNetworkNetworkN/A
Attack ComplexityHighLowN/A
Privileges RequiredNoneNoneN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityHighHighN/A
Integrity ImpactHighHighN/A
Availability ImpactNoneNoneN/A

Vector

Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Red Hat CVSS v3 Score Explanation

A successful exploit of this flaw requires at least one factor that is beyond the attacker's control, such as commit privileges to a supported component or repo. While there are several possible contributory factors, we feel this condition is better reflected by High Access Complexity rather than Low.

Understanding the Weakness (CWE)

CWE-200

Confidentiality

Technical Impact: Read Application Data

Frequently Asked Questions

Not sure what something means? Check out our Security Glossary.

Want to get errata notifications? Sign up here.