SB2017071216 - Debian update for undertow

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Main Vulnerability Database SB2017071216

SB2017071216 - Debian update for undertow

Published: July 12, 2017 Updated: July 17, 2017

Security Bulletin ID SB2017071216
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) HTTP response splitting (CVE-ID: CVE-2017-2666)

The vulnerability allows a remote attacker to perform a phishing attack

The vulnerability exists due to an error when processing headers in HTTP requests in Undertow. A remote attacker can create a specially crafted HTTP request, split the HTTP response from server and poison the web cache. 

Successful exploitation of the vulnerability may allow an attacker to poison web cache and perform phishing or XSS attacks against website visitors.


2) Denial of service (CVE-ID: CVE-2017-2670)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when closing TCP sockets in Undertow. A remote attacker can create and close multiple TCP connections, which my result in infinite loop and server crash.


Remediation

Install update from vendor's website.

References