full-disclosure - [OpenSSL Advisory] Vulnerabilities in ASN.1 parsing

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Message-ID: <20030930151717.GA23322@deneb.enyo.de>
From: fw at deneb.enyo.de (Florian Weimer)
Subject: [OpenSSL Advisory] Vulnerabilities in ASN.1 parsing

On Tue, Sep 30, 2003 at 03:27:50PM +0100, Mark J Cox wrote:

> Who is affected?
> - ----------------
> 
> All versions of OpenSSL up to and including 0.9.6j and 0.9.7b and all
> versions of SSLeay are affected.
> 
> Any application that makes use of OpenSSL's ASN1 library to parse
> untrusted data. This includes all SSL or TLS applications, those using
> S/MIME (PKCS#7) or certificate generation routines.

Does verifying a RSA signature also count?  IIRC the ASN.1 parser is
invoked during the process (to check the padding).