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From: adam at algroup.co.uk (Adam Laurie) Subject: [apache-ssl] Apache-SSL security advisory - apache_1.3.28+ssl_1.52 and prior Apache-SSL optional client certificate vulnerability ---------------------------------------------------- Synopsis -------- If configured with SSLVerifyClient set to 1 or 3 (client certificates optional) and SSLFakeBasicAuth, Apache-SSL 1.3.28+1.52 and all earlier versions would permit a client to use real basic authentication to forge a client certificate. All the attacker needed is the "one-line DN" of a valid user, as used by faked basic auth in Apache-SSL, and the fixed password ("password" by default). Fix --- Install Apache-SSL 1.3.29+1.53 from the usual places (see http://www.apache-ssl.org/). Credits ------- This vulnerability was found and reported by Wietse Venema. cheers, Adam -- Adam Laurie Tel: +44 (20) 8742 0755 A.L. Digital Ltd. Fax: +44 (20) 8742 5995 The Stores http://www.thebunker.net 2 Bath Road http://www.aldigital.co.uk London W4 1LT mailto:adam@...roup.co.uk UNITED KINGDOM PGP key on keyservers ----------------------------------------------------------------------------------- to unsubscribe, send a blank email to: apache-ssl-unsubscribe@...ts.aldigital.co.uk
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