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HTTP Request Smuggling Affecting undertow package, versions <1.4.18-1

Severity

 Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.51% (78th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-UNDERTOW-307898
  • published27 Jun 2018
  • disclosed27 Jul 2018
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Introduced: 27 Jun 2018

CVE-2017-2666  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Debian:unstable undertow to version 1.4.18-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream undertow package and not the undertow package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

It was discovered in Undertow that the code that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.