CVE-2021-20220

Aliases:GHSA-qjwc-v72v-fq6r
Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 23 Feb 2021, 17:21
Last modified:03 Aug 2024, 17:30

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5.8 MEDIUM
v2.0 (nvd)
EPSS Score
0.18% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Feb 2021, 17:21
Published
Vulnerability first disclosed
03 Aug 2024, 17:30
Last Modified
Vulnerability information updated

Description

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.18%• Percentile: 40%

Techniques & Countermeasures

  • CWE-444•Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

    The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Affected Systems

  • io.undertow•undertow-core

    ≥ 2.1.0, < 2.1.6 | < 2.0.34

  • netapp•active_iq_unified_manager

    na

  • netapp•oncommand_workflow_automation

    na

  • redhat•undertow

    < 2.0.34 | ≥ 2.1.0, < 2.1.6

References (5)