Use After Free Affecting tor package, versions [0.3.2.0,0.3.2.10)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
6.74% (94th percentile)

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  • Snyk IDSNYK-UNMANAGED-TOR-2371313
  • published26 Jan 2022
  • disclosed5 Mar 2018
  • creditUnknown

Introduced: 5 Mar 2018

CVE-2018-0491  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade tor to version 0.3.2.10 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free. A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST implementation allows a channel to be added more than once in the pending list.

CVSS Scores

version 3.1