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CVE-2020-2168

CVE-2020-2168: RCE vulnerability in Jenkins Azure Container Service Plugin

8.8

CVSS Score
3.1

Basic Information

CVE ID
CVE-2020-2168
GHSA ID
GHSA-5qff-7944-vq4f
EPSS Score
0.6998%
CWE
CWE-20
Published
5/24/2022
Updated
1/31/2023
KEV Status
No
Technology
TechnologyJava

Technical Details

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Package NameEcosystemVulnerable VersionsFirst Patched Version
org.jenkins-ci.plugins:azure-acsmaven< 1.0.21.0.2

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability stems from improper YAML parser configuration (CWE-502). The advisory explicitly states the parser wasn't restricted to safe types pre-1.0.2. While exact function names aren't provided, the pattern matches known YAML deserialization vulnerabilities where Yaml.load() or similar methods are used without SafeConstructor. The fix in 1.0.2 would logically involve adding type restrictions to this YAML parsing function.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

*zur* *ont*in*r S*rvi** Plu*in *.*.* *n* **rli*r *o*s not *on*i*ur* its Y*ML p*rs*r to pr*v*nt t** inst*nti*tion o* *r*itr*ry typ*s. T*is r*sults in * r*mot* *o** *x**ution (R**) vuln*r**ility *xploit**l* *y us*rs **l* to provi** Y*ML input *il*s to

Reasoning

T** vuln*r**ility st*ms *rom improp*r Y*ML p*rs*r *on*i*ur*tion (*W*-***). T** **visory *xpli*itly st*t*s t** p*rs*r w*sn't r*stri*t** to s*** typ*s pr*-*.*.*. W*il* *x**t `*un*tion n*m*s` *r*n't provi***, t** p*tt*rn m*t***s known Y*ML **s*ri*liz*ti