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CVE-2018-17247

CVE-2018-17247: Improper Restriction of XML External Entity Reference in Elasticsearch

5.9

CVSS Score
3.0

Basic Information

CVE ID
CVE-2018-17247
GHSA ID
GHSA-ccmr-qj26-845g
EPSS Score
0.57295%
CWE
CWE-611
Published
5/13/2022
Updated
1/27/2023
KEV Status
No
Technology
TechnologyJava

Technical Details

CVSS Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Package NameEcosystemVulnerable VersionsFirst Patched Version
org.elasticsearch:elasticsearchmaven>= 6.5.0, < 6.5.26.5.2

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability centers around insecure XML parsing in Machine Learning's find_file_structure API. While no patch code is provided, the advisory explicitly identifies the affected component. In Elasticsearch's architecture:

  1. TransportAction.doExecute methods handle API request execution
  2. FileStructureFinderManager contains format-specific parsing logic
  3. XXE vulnerabilities typically manifest in DocumentBuilderFactory configuration

These functions would appear in stack traces when processing malicious XML content through the vulnerable API. The medium confidence reflects inference from architectural patterns rather than direct patch analysis.

Vulnerable functions

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

WAF Protection Rules

WAF Rule

*l*sti*s**r** S**urity v*rsions *.*.* *n* *.*.* *ont*in *n XX* *l*w in M***in* L**rnin*'s *in*_*il*_stru*tur* *PI. I* * poli*y *llowin* *xt*rn*l n*twork ****ss **s ***n ***** to *l*sti*s**r**'s J*v* S**urity M*n***r t**n *n *tt**k*r *oul* s*n* * sp**

Reasoning

T** vuln*r**ility **nt*rs *roun* ins**ur* XML p*rsin* in M***in* L**rnin*'s *in*_*il*_stru*tur* *PI. W*il* no p*t** *o** is provi***, t** **visory *xpli*itly i**nti*i*s t** *****t** *ompon*nt. In *l*sti*s**r**'s *r**it**tur*: *. Tr*nsport**tion.*o*x*