Apache Cocoon up to 2.1.12 StreamGenerator XML Data xml external entity reference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apache Cocoon up to 2.1.12. Affected by this vulnerability is an unknown functionality of the component StreamGenerator. Performing a manipulation as part of XML Data results in xml external entity reference. This vulnerability is cataloged as CVE-2020-11991. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apache Cocoon up to 2.1.12. This affects some unknown processing of the component StreamGenerator. The manipulation as part of a XML Data leads to a xml external entity reference vulnerability. CWE is classifying the issue as CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to access any file on the server system.

The weakness was shared 09/11/2020 (Website). It is possible to read the advisory at lists.apache.org. This vulnerability is uniquely identified as CVE-2020-11991 since 04/21/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in XML and been published immediately after the advisory. The exploit is shared for download at lists.apache.org. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.

Upgrading to version 2.1.13 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Cocoon 2.1.13

Timelineinfo

04/21/2020 🔍
09/11/2020 +143 days 🔍
09/11/2020 +0 days 🔍
09/11/2020 +0 days 🔍
09/11/2020 +0 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Not defined

CVE: CVE-2020-11991 (🔍)
GCVE (CVE): GCVE-0-2020-11991
GCVE (VulDB): GCVE-100-161139
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/11/2020 21:45
Updated: 09/11/2020 21:50
Changes: 09/11/2020 21:45 (45), 09/11/2020 21:50 (17)
Complete: 🔍
Cache ID: 216::103

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