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CVE-2021-21701

CVE-2021-21701: XXE vulnerability in Jenkins Performance Plugin

6.5

CVSS Score
3.1

Basic Information

CVE ID
CVE-2021-21701
GHSA ID
GHSA-hr8p-76q8-fxwq
EPSS Score
0.79256%
CWE
CWE-611
Published
5/24/2022
Updated
10/27/2023
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:N/A:N
Package NameEcosystemVulnerable VersionsFirst Patched Version
org.jenkins-ci.plugins:performancemaven<= 3.20

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability stems from insecure XML parsing in the Performance Plugin. The ZDI-21-1313 advisory explicitly references the TaurusParser class as containing the flaw. XXE vulnerabilities typically occur when XML parsers have DTD/external entity processing enabled. Since TaurusParser is specifically called out in vulnerability details and no XML hardening measures are mentioned in advisories, we can conclude its parse() method lacks proper security configurations like disabling XXE through DocumentBuilderFactory security features.

Vulnerable functions

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

WAF Protection Rules

WAF Rule

J*nkins P*r*orm*n** Plu*in *.** *n* **rli*r *o*s not *on*i*ur* its XML p*rs*r to pr*v*nt XML *xt*rn*l *ntity (XX*) *tt**ks. T*is *llows *tt**k*rs **l* to *ontrol worksp*** *ont*nts to **v* J*nkins p*rs* * *r**t** XML r*port *il* t**t us*s *xt*rn*l *

Reasoning

T** vuln*r**ility st*ms *rom ins**ur* XML p*rsin* in t** P*r*orm*n** Plu*in. T** Z*I-**-**** **visory *xpli*itly r***r*n**s t** `T*urusP*rs*r` *l*ss *s *ont*inin* t** *l*w. XX* vuln*r**iliti*s typi**lly o**ur w**n XML p*rs*rs **v* *T*/*xt*rn*l *ntity