CVE-2020-27782 — HIGH (7.5)

Vulnerability Description

A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redhat	Jboss Fuse	6.0.0
Redhat	Openshift Application Runtimes	-
Redhat	Undertow	2.0.33

Related Weaknesses (CWE)

CWE-400

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901304Issue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1901304Issue TrackingVendor Advisory

FAQ

What is CVE-2020-27782?

CVE-2020-27782 is a vulnerability with a CVSS score of 7.5 (HIGH). A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a d...

How severe is CVE-2020-27782?

CVE-2020-27782 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27782?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Jboss Fuse, Redhat Openshift Application Runtimes, Redhat Undertow.