oss-sec mailing list archives
Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235)
From: Kurt Seifried <kseifried () redhat com>
Date: Thu, 29 Jan 2015 02:05:38 -0700
On 29/01/15 01:16 AM, Sven Kieske wrote:
On 29/01/15 07:20, Paul Pluzhnikov wrote:If I was supposed to cry alarm, I would have to cry alarm every time there is a buffer overflow in glibc, which doesn't seem very useful.Well as someone who is very careful, I _would_ consider every buffer overflow a security risk unless proven otherwise. It's unexpected behaviour, isn't it? It's up to the surrounding systems such as ASLR to mitigate it. But neither is ASLR deployed everywhere, nor is it a silver bullet to solve the problem. But I don't want to really reiterate this discussion. All possible opinions on this topic have already been stated.
So you'll be doing the work to confirm which ones are/are not, patch them, regression test the patches and so on? Awesome! There's a reason we don't treat every potential security flaw as a security vulnerability. We have finite resources and pretty much an infinite number of flaws to deal with. Until you solve that problem we have to make due with "best effort", letting perfection be the enemy of good will kill us. -- Kurt Seifried -- Red Hat -- Product Security -- Cloud PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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Current thread:
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235), (continued)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Florian Weimer (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Huzaifa Sidhpurwala (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Kurt Seifried (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) cve-assign (Jan 29)
- Please REJECT CVE-2012-6686 Florian Weimer (Feb 24)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Raphael Geissert (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Paul Pluzhnikov (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Yves-Alexis Perez (Jan 28)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Sven Kieske (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Kurt Seifried (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Hanno Böck (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Paul Pluzhnikov (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Hanno Böck (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Solar Designer (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Kees Cook (Jan 29)
- Re: GHOST gethostbyname() heap overflow in glibc (CVE-2015-0235) Alexander Cherepanov (Jan 29)