CVE-2020-27782

CWE-400 — Uncontrolled Resource Consumption7 documents6 sources
Severity
7.5HIGH
EPSS
0.2%
top 60.13%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Redhat Jboss FuseRedhat Undertow
Timeline
PublishedFeb 23
Latest updateFeb 9

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶Mavenio.undertow:undertow-core2.1.0 — 2.1.5+1
▶Debianundertow< 2.2.4-1
▶CVEListV5undertow2.0.33.SP2, 2.1.5.SP1, 2.2.3.SP1+2
▶NVDredhat/undertow2.0.33, 2.1.5, 2.2.3+2
▶NVDredhat/jboss_fuse6.0.0, 7.0.0+1

🔴Vulnerability Details

4
GHSA
Denial of service in Undertow↗2022-02-09
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OSV
Denial of service in Undertow↗2022-02-09
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OSV
CVE-2020-27782: A flaw was found in the Undertow AJP connector↗2021-02-23
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CVEList
CVE-2020-27782: A flaw was found in the Undertow AJP connector↗2021-02-23
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📋Vendor Advisories

2
Red Hat
undertow: special character in query results in server errors↗2021-01-25
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Debian
CVE-2020-27782: undertow - A flaw was found in the Undertow AJP connector. Malicious requests and abrupt co...↗2020
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