FreeBSD : PuTTY -- Release 0.74 fixes two security vulnerabilities (6190c0cd-b945-11ea-9401-2dcf562daa69)

medium Nessus Plugin ID 137870

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VPR Score: 4.4

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Simon Tatham reports :

[Release 0.74] fixes the following security issues :

- New configuration option to disable PuTTY's default policy of changing its host key algorithm preferences to prefer keys it already knows. (There is a theoretical information leak in this policy.) [CVE-2020-14002]

- In some situations an SSH server could cause PuTTY to access freed mdmory by pretending to accept an SSH key and then refusing the actual signature. It can only happen if you're using an SSH agent.

Solution

Update the affected packages.

See Also

https://lists.tartarus.org/pipermail/putty-announce/2020/000030.html

http://www.nessus.org/u?50869cce

http://www.nessus.org/u?bfb73fdc

http://www.nessus.org/u?de7afab5

http://www.nessus.org/u?2f31b30c

Plugin Details

Severity: Medium

ID: 137870

File Name: freebsd_pkg_6190c0cdb94511ea94012dcf562daa69.nasl

Version: 1.3

Type: local

Published: 6/29/2020

Updated: 7/10/2020

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 5.9

Temporal Score: 5.2

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:putty, p-cpe:/a:freebsd:freebsd:putty-gtk2, p-cpe:/a:freebsd:freebsd:putty-nogtk, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 6/28/2020

Vulnerability Publication Date: 6/27/2020

Reference Information

CVE: CVE-2020-14002