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Fedora 27 : botan2 (2018-98ab6b4e56)

medium Nessus Plugin ID 111016

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Synopsis

The remote Fedora host is missing a security update.

Description

Update Botan2 to 2.7.0.

Focus of this release is on performance and side channel hardening.

 - Address side channels in RSA key generation and ECDSA signing

 - Side channel hardening in many core algorithms (modular exponentiation, ECC scalar multiply, Karatsuba multiplication, Barrett reduction, etc) to reduce the risk of future exploitable side channels.

 - Many optimizations for ECC operations, RSA (including key gen), DSA, DH, and XMSS. Typical speedups vs 2.6.0 is 10 to 40% depending on operation and key size.

 - Add Scrypt password hashing. Also supported is using Scrypt to derive keys for private key encryption (format compatible with upcoming OpenSSL 1.1.1)

 - Add base32 encoding/decoding

 - Plus many bug fixes and smaller enhancements documented in the [release notes](https://botan.randombit.net/news.html#version-2-7
 -0-2018-07-02)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected botan2 package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2018-98ab6b4e56

https://botan.randombit.net/news.html#version-2-7-0-2018-07-02

Plugin Details

Severity: Medium

ID: 111016

File Name: fedora_2018-98ab6b4e56.nasl

Version: 1.6

Type: local

Agent: unix

Published: 7/12/2018

Updated: 1/6/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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:fedoraproject:fedora:botan2, cpe:/o:fedoraproject:fedora:27

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 7/11/2018

Vulnerability Publication Date: 6/13/2018

Reference Information

CVE: CVE-2018-0495, CVE-2018-12435