CSRF vulnerability in Jenkins Amazon EC2 Plugin

CVE-2020-2090 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Amazon EC2 Plugin 1.47 and earlier does not perform permission checks in methods performing form validation. This allows users with Overall/Read access to Jenkins to connect to an attacker-specified URL within the AWS region using attacker-specified credentials IDs obtained through another method.

This vulnerability might also allow attackers to capture credentials stored in Jenkins. We have not been able to confirm that this is possible.

Additionally, these form validation methods do not require POST requests, resulting in a CSRF vulnerability.

Amazon EC2 Plugin 1.48 requires POST requests and Overall/Administer permission for the affected form validation methods.

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2022-05-24 17:06:22 UTC
Updated
2023-12-13 11:53:01 UTC
GitHub reviewed
2022-12-21 16:37:12 UTC
NVD published
2020-01-15

EPSS Score

Score Percentile
0.11% 29.47%

CVSS Scores

Base score Version Severity Vector
3.1 3.1 —
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-9hvf-pfq3-7pp6 ↗
CVE CVE-2020-2090 ↗

CWEs

CWE id Name
CWE-352 Cross-Site Request Forgery (CSRF)

Credits

  • NotMyFault (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven org.jenkins-ci.plugins:ec2 < 1.48 1.48 —

References

cvelogic Threat Intelligence