Access Restriction Bypass Affecting openssh package, versions <1:6.6p1-2ubuntu2.2


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.87% (84th percentile)

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  • Snyk IDSNYK-UBUNTU1404-OPENSSH-368777
  • published3 Aug 2015
  • disclosed3 Aug 2015

Introduced: 3 Aug 2015

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

How to fix?

Upgrade Ubuntu:14.04 openssh to version 1:6.6p1-2ubuntu2.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1