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FreeBSD : botan2 -- ECDSA side channel (7762d7ad-2e38-41d2-9785-c51f653ba8bd)

medium Nessus Plugin ID 111991

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

botan2 developers report :

A side channel in the ECDSA signature operation could allow a local attacker to recover the secret key. Found by Keegan Ryan of NCC Group.

Bug introduced in 2.5.0, fixed in 2.7.0. The 1.10 branch is not affected.

Solution

Update the affected package.

See Also

https://botan.randombit.net/security.html#id1

https://github.com/randombit/botan/pull/1604

http://www.nessus.org/u?735a8ffa

Plugin Details

Severity: Medium

ID: 111991

File Name: freebsd_pkg_7762d7ad2e3841d29785c51f653ba8bd.nasl

Version: 1.4

Type: local

Published: 8/20/2018

Updated: 11/10/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 1.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:botan2, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 8/17/2018

Vulnerability Publication Date: 6/13/2018

Reference Information

CVE: CVE-2018-12435