Denial of Service (DoS) Affecting tor package, versions [,0.2.1.29)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
2.52% (83rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-TOR-2371363
  • published26 Jan 2022
  • disclosed19 Jan 2011
  • creditUnknown

Introduced: 19 Jan 2011

CVE-2011-0490  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade tor to version 0.2.1.29 or higher.

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.

CVSS Base Scores

version 3.1