The remote Debian host is missing a security-related update.
Multiple vulnerabilities have been found in OpenSSL. The Common Vulnerabilities and Exposures project identifies the following issues : - CVE-2012-0884 Ivan Nestlerode discovered a weakness in the CMS and PKCS #7 implementations that could allow an attacker to decrypt data via a Million Message Attack (MMA). - CVE-2012-1165 It was discovered that a NULL pointer could be dereferenced when parsing certain S/MIME messages, leading to denial of service. - CVE-2012-2110 Tavis Ormandy, Google Security Team, discovered a vulnerability in the way DER-encoded ASN.1 data is parsed that can result in a heap overflow. Additionally, the fix for CVE-2011-4619 has been updated to address an issue with SGC handshakes. Tomas Hoger, Red Hat, discovered that the fix for CVE-2012-2110 for the 0.9.8 series of OpenSSL was incomplete. It has been assigned the CVE-2012-2131 identifier.
Upgrade the openssl packages. For the stable distribution (squeeze), these problems have been fixed in version 0.9.8o-4squeeze12.