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Apache Solr vulnerable to XML Bomb

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Mar 14, 2023

Package

maven org.apache.solr:solr-core (Maven)

Affected versions

< 5.0.0

Patched versions

5.0.0

Description

Solr versions prior to 5.0.0 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it?s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.

References

Published by the National Vulnerability Database Sep 10, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Nov 8, 2022
Last updated Mar 14, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.332%
(71st percentile)

Weaknesses

CVE ID

CVE-2019-12401

GHSA ID

GHSA-jq2w-w7v2-69q5

Source code

No known source code
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