Resource Management Errors Affecting tor package, versions [,0.2.3.25)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
4.24% (93rd percentile)

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  • Snyk IDSNYK-UNMANAGED-TOR-2371355
  • published26 Jan 2022
  • disclosed1 Jan 2013
  • creditUnknown

Introduced: 1 Jan 2013

CVE-2012-5573  (opens in a new tab)
CWE-399  (opens in a new tab)

How to fix?

Upgrade tor to version 0.2.3.25 or higher.

Overview

Affected versions of this package are vulnerable to Resource Management Errors. The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service (memory consumption or excessive cell reception rate) or bypass intended flow-control restrictions via a RELAY_COMMAND_SENDME command.

CVSS Scores

version 3.1