Access Restriction Bypass Affecting tor package, versions [,0.2.2.34)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.1% (45th percentile)

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  • Snyk IDSNYK-UNMANAGED-TOR-2371390
  • published26 Jan 2022
  • disclosed23 Dec 2011
  • creditUnknown

Introduced: 23 Dec 2011

CVE-2011-2768  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade tor to version 0.2.2.34 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.

CVSS Scores

version 3.1