Denial of Service (DoS) Affecting tor package, versions [,0.2.2.39)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
2.16% (80th percentile)

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  • Snyk IDSNYK-UNMANAGED-TOR-2371369
  • published26 Jan 2022
  • disclosed14 Sept 2012
  • creditUnknown

Introduced: 14 Sep 2012

CVE-2012-4419  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade tor to version 0.2.2.39 or higher.

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

CVSS Base Scores

version 3.1