GLSA-200609-18 : Opera: RSA signature forgery

Medium Nessus Plugin ID 22469


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200609-18 (Opera: RSA signature forgery)

Opera makes use of OpenSSL, which fails to correctly verify PKCS #1 v1.5 RSA signatures signed by a key with exponent 3. Some CAs in Opera's list of trusted signers are using root certificates with exponent 3.
Impact :

An attacker could forge certificates which will appear valid and signed by a trusted CA.
Workaround :

There is no known workaround at this time.


All Opera users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=www-client/opera-9.02'

See Also

Plugin Details

Severity: Medium

ID: 22469

File Name: gentoo_GLSA-200609-18.nasl

Version: $Revision: 1.16 $

Type: local

Published: 2006/09/29

Modified: 2018/01/12

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.4

Temporal Score: 5.6

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:opera, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2006/09/28

Vulnerability Publication Date: 2006/09/05

Reference Information

BID: 19849

OSVDB: 28549

GLSA: 200609-18