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redhatRedHatRHSA-2016:0043
HistoryJan 14, 2016 - 7:50 p.m.

(RHSA-2016:0043) Moderate: openssh security update

2016-01-1419:50:42
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36

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:S/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

67.5%

OpenSSH is OpenBSD’s SSH (Secure Shell) protocol implementation.
These packages include the core files necessary for both the OpenSSH client
and server.

An information leak flaw was found in the way the OpenSSH client roaming
feature was implemented. A malicious server could potentially use this flaw
to leak portions of memory (possibly including private SSH keys) of a
successfully authenticated OpenSSH client. (CVE-2016-0777)

A buffer overflow flaw was found in the way the OpenSSH client roaming
feature was implemented. A malicious server could potentially use this flaw
to execute arbitrary code on a successfully authenticated OpenSSH client if
that client used certain non-default configuration options. (CVE-2016-0778)

Red Hat would like to thank Qualys for reporting these issues.

All openssh users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing this
update, the OpenSSH server daemon (sshd) will be restarted automatically.

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:S/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

67.5%