Date: Wed, 26 Oct 2011 16:29:35 +0200 From: Marcus Meissner <meissner@...e.de> To: OSS Security List <oss-security@...ts.openwall.com> Subject: Re: CVE Request: openldap2 UTF8StringNormalize() can cause a (one-byte) buffer overflow On Wed, Oct 26, 2011 at 04:26:45PM +0200, Marcus Meissner wrote: > Hi, Dup from Sebastians mail, which he mailed at the same tiem. Ciao, Marcus > From our openldap2 Maintainer Ralf: > |A bug in UTF8StringNormalize() can cause a (one-byte) buffer overflow when it > |is passed a zero length string. (Can e.g. be triggered by passing a > |"postalAddressAttribute" with the value "$" (or no value a all). What the code > |does is writing a '\0' past a 1-byte long buffer allocated on the heap. (At > |least as far as I understand it) > | > |Upstream Bug: ITS#7059 > |http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059;selectid=7059 > | > |This bug is present in older releases as well. > | > |I wonder if this is really security relevant as it seem the worst that might > |happen is that an authenticated user can crash the daemon. I was not able to do > |so during a short test but I guess that is just a matter of trying long enough. > > Ciao, Marcus > -- Working, but not speaking, for the following german company: SUSE LINUX Products GmbH, HRB 16746 (AG Nuernberg) Geschaeftsfuehrer: Jeff Hawn, Jennifer Guild, Felix Imendoerffer
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