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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200609-18] Opera: RSA signature forgery

Vulnerability Assessment Details

[GLSA-200609-18] Opera: RSA signature forgery

Vulnerability Assessment Summary
Opera: RSA signature forgery

Detailed Explanation for this Vulnerability Assessment
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

A possible hacker could forge certificates which will appear valid and signed
by a trusted CA.

Workaround

There is no known workaround at this time.

References:
http://www.opera.com/support/search/supsearch.dml?index=845
http://www.gentoo.org/security/en/glsa/glsa-200609-05.xml

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

Network Security Threat Level: Medium

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

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