Apache Solr up to 1.4.1/3.6.2/4.10.4 XML Document resource consumption

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability has been found in Apache Solr up to 1.4.1/3.6.2/4.10.4 and classified as problematic. Affected by this vulnerability is an unknown part of the component XML Document Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-400. As an impact it is known to affect availability. The summary by CVE is:

Solr versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2 and 4.0.0 to 4.10.4 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.

The weakness was shared 09/10/2019 (Website). The advisory is shared at mail-archives.us.apache.org. This vulnerability is known as CVE-2019-12401 since 05/28/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/18/2020). MITRE ATT&CK project uses the attack technique T1499 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

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Exploitinginfoedit

Class: Denial of service
CWE: CWE-400
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: no mitigation known
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Timelineinfoedit

05/28/2019 🔍
09/10/2019 +105 days 🔍
09/11/2019 +1 days 🔍
08/18/2020 +342 days 🔍

Sourcesinfoedit

Vendor: https://www.apache.org/

Advisory: mail-archives.us.apache.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-12401 (🔍)

Entryinfoedit

Created: 09/11/2019 07:17 AM
Updated: 08/18/2020 08:15 PM
Changes: (1) advisory_confirm_url
Complete: 🔍

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