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

Medium Nessus Plugin ID 87609


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


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.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 87609

File Name: freebsd_pkg_10f7bc7603354a88b3910b05b3a8ce1c.nasl

Version: $Revision: 2.7 $

Type: local

Published: 2015/12/29

Modified: 2016/10/19

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

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


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: 2015/12/28

Vulnerability Publication Date: 2015/12/22

Reference Information

CVE: CVE-2015-7575