Memory leak in Undertow - CVE-2018-1114

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Main Vulnerability Database Vulnerabilities #VU20069

Memory leak in Undertow - CVE-2018-1114

Published: August 13, 2019


Vulnerability identifier: #VU20069
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-1114
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Red Hat Inc.
Affected software:
Undertow

Detailed vulnerability description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in URLResource.getLastModified() function in Undertow due to the method closes file descriptors only when they are finalized. A remote attacker can initiate opening of numerous URLs and exhaust all file descriptors, leading to a denial of service (DoS) attack.


How to mitigate CVE-2018-1114

Install updates from vendor's website.

Sources