Undertow 2.0.33.SP2/2.1.5.SP1/2.2.3.SP1 AJP Connector denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Undertow 2.0.33.SP2/2.1.5.SP1/2.2.3.SP1. This affects an unknown function of the component AJP Connector. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2020-27782. No exploit exists.

Detailsinfo

A vulnerability was found in Undertow 2.0.33.SP2/2.1.5.SP1/2.2.3.SP1. It has been declared as problematic. This vulnerability affects an unknown functionality of the component AJP Connector. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was disclosed 02/24/2021. The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2020-27782. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 240506 (RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.1.11 on RHEL 7 (RHSA-2025:9582)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (240506). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
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: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 240506
Nessus Name: RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.1.11 on RHEL 7 (RHSA-2025:9582)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2020 🔍
02/24/2021 +120 days 🔍
02/24/2021 +0 days 🔍
06/26/2025 +1583 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2020-27782 (🔍)
GCVE (CVE): GCVE-0-2020-27782
GCVE (VulDB): GCVE-100-170332

Entryinfo

Created: 02/24/2021 08:51
Updated: 06/26/2025 18:52
Changes: 02/24/2021 08:51 (35), 03/04/2021 20:29 (2), 03/04/2021 20:34 (18), 06/26/2025 18:52 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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