It was discovered that a significant memory leak could occur in openssl, related to the reinitialization of zlib. This could result in a remotely exploitable denial of service vulnerability when using the Apache httpd server in a configuration where mod_ssl, mod_php5, and the php5-curl extension are loaded. The old stable distribution is not affected by this issue. For the stable distribution , this problem has been fixed in version 0.9.8g-15+lenny6. The packages for the arm architecture are not included in this advisory. They will be released as soon as they become available. For the testing distribution and the unstable distribution , this problem will be fixed soon. The issue does not seem to be exploitable with the apache2 package contained in squeeze/sid. We recommend that you upgrade your openssl packages. You also need to restart your Apache httpd server to make sure it uses the updated libraries.