Apache Solr DataImportHandler Code Injection Vulnerability

CheckOps priority index

7.2/10 Patch within 7 days

Severity7.2

Probability8.4

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 83.5% higher than 99.7% of CVEs

CVSS 3.1 7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:

Exploited for 1,789 days 10 Dec 2021

CISA due date 10 Jun 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)10 Dec 2021
Exploited in EUVD (ENISA)10 Dec 2021
Used by ransomwareno
EPSS above 10 %83.5%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

In Apache Solr, the DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. Since a DIH config can contain scripts, this parameter is a security risk. Starting with version 8.2.0 of Solr, use of this parameter requires setting the Java System property "enable.dih.dataConfigParam" to true.

Affected products

Apache SolrSolr

Affected versions

Apache Solr all prior to 8.2.0

Weaknesses (CWE)

CWE-94

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

01 Aug 2019
Published
10 Dec 2021
Exploitation reported (ENISA)
10 Dec 2021
Added to the KEV catalog
10 Jun 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 83.5%

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