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FreeBSD : NSS -- MD5 downgrade in TLS 1.2 signatures (10f7bc76-0335-4a88-b391-0b05b3a8ce1c) (SLOTH)

medium Nessus Plugin ID 87609

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Synopsis

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

Description

The Mozilla Project reports :

Security researcher Karthikeyan Bhargavan reported an issue in Network Security Services (NSS) where MD5 signatures in the server signature within the TLS 1.2 ServerKeyExchange message are still accepted. This is an issue since NSS has officially disallowed the accepting MD5 as a hash algorithm in signatures since 2011. This issues exposes NSS based clients such as Firefox to theoretical collision-based forgery attacks.

Solution

Update the affected packages.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2015-150/

https://hg.mozilla.org/projects/nss/rev/94e1157f3fbb

http://www.nessus.org/u?10508221

Plugin Details

Severity: Medium

ID: 87609

File Name: freebsd_pkg_10f7bc7603354a88b3910b05b3a8ce1c.nasl

Version: 2.11

Type: local

Published: 12/29/2015

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:linux-c6-nss, p-cpe:/a:freebsd:freebsd:linux-firefox, p-cpe:/a:freebsd:freebsd:linux-seamonkey, p-cpe:/a:freebsd:freebsd:linux-thunderbird, p-cpe:/a:freebsd:freebsd:nss, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 12/28/2015

Vulnerability Publication Date: 12/22/2015

Reference Information

CVE: CVE-2015-7575