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CVE

CVE-2020-10687

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to C

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where 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.

MEDIUM · CVSS 4.8 EPSS 0.00123
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

3
redhat undertow< 2.2.0
redhat jboss enterprise application platformall versions
redhat single sign-onall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven io.undertow:undertow-core MODERATE fixed in 2.2.0.Final
▣

Scoring & Timeline

4.8
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Sep 2020 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
⚑

Vendor Advisories

17
rhsaRHSA-2021:2755Moderate
rhsaRHSA-2021:2210Important
rhsaRHSA-2021:0885Moderate
rhsaRHSA-2021:0874Moderate
rhsaRHSA-2021:0872Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=1785049Issue TrackingVendor Advisory
https://lists.apache.org/thread.html/r6603513ea8afbf6857fd77ca5888ec8385d0af493baa4250e28c351c%40%3Cdev.cxf.apache.org%3E
https://security.netapp.com/advisory/ntap-20220210-0015/Third Party Advisory
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