Access Restriction Bypass Affecting openssh-portable package, versions [,6.9)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.93% (83rd percentile)

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  • Snyk IDSNYK-UNMANAGED-OPENSSHPORTABLE-2319259
  • published14 Dec 2021
  • disclosed3 Aug 2015
  • creditUnknown

Introduced: 3 Aug 2015

CVE-2015-5352  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade openssh-portable to version 6.9 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.

References

CVSS Scores

version 3.1