FreeBSD : OpenSSL -- Padding oracle vulnerability (7700061f-34f7-11e9-b95c-b499baebfeaf)

medium Nessus Plugin ID 122359

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VPR Score: 4.4

Synopsis

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

Description

The OpenSSL project reports :

0-byte record padding oracle (CVE-2019-1559) (Moderate) If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data.

Solution

Update the affected packages.

See Also

https://www.openssl.org/news/secadv/20190226.txt

http://www.nessus.org/u?d518fb0e

Plugin Details

Severity: Medium

ID: 122359

File Name: freebsd_pkg_7700061f34f711e9b95cb499baebfeaf.nasl

Version: 1.6

Type: local

Published: 2/21/2019

Updated: 2/10/2020

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:linux-c6-openssl, p-cpe:/a:freebsd:freebsd:openssl, 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: 2/20/2019

Vulnerability Publication Date: 2/19/2019

Reference Information

CVE: CVE-2019-1559