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CVE-2021-37714

Published: 18 August 2021

jsoup is a Java library for working with HTML. Those using jsoup versions prior to 1.14.2 to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. The issue is patched in version 1.14.2. There are a few available workarounds. Users may rate limit input parsing, limit the size of inputs based on system resources, and/or implement thread watchdogs to cap and timeout parse runtimes.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
jsoup
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
jammy Needs triage

lunar Not vulnerable
(1.15.2-1)
bionic Needs triage

focal Needs triage

trusty Needs triage

upstream
Released (1.14.2)
xenial Needs triage

kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
mantic Not vulnerable
(1.15.2-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H