FreeBSD : opera -- RSA Signature Forgery (1fe734bf-4a06-11db-b48d-00508d6a62df)

Medium Nessus Plugin ID 22428


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


Opera reports :

A specially crafted digital certificate can bypass Opera's certificate signature verification. Forged certificates can contain any false information the forger chooses, and Opera will still present it as valid. Opera will not present any warning dialogs in this case, and the security status will be the highest possible (3). This defeats the protection against 'man in the middle', the attacks that SSL was designed to prevent.

There is a flaw in OpenSSL's RSA signature verification that affects digital certificates using 3 as the public exponent. Some of the certificate issuers that are on Opera's list of trusted signers have root certificates with 3 as the public exponent. The forged certificate can appear to be signed by one of these.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 22428

File Name: freebsd_pkg_1fe734bf4a0611dbb48d00508d6a62df.nasl

Version: $Revision: 1.14 $

Type: local

Published: 2006/09/22

Modified: 2015/09/02

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:linux-opera, p-cpe:/a:freebsd:freebsd:opera, p-cpe:/a:freebsd:freebsd:opera-devel, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2006/09/22

Vulnerability Publication Date: 2006/09/18

Reference Information

CVE: CVE-2006-4339

Secunia: 21709, 21982

CWE: 310