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Date: Tue, 19 Jan 2016 11:06:32 -0700
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security <oss-security@...ts.openwall.com>
Cc: Assign a CVE Identifier <cve-assign@...re.org>
Subject: Re: CVE assignment request for security bugs fixed in
glibc 2.23
I'll assign these tomorrow unless Mitre gets to them first, the one
request swbz#18928
is already several months old and shouldn't take this long.
On Tue, Jan 19, 2016 at 11:04 AM, Florian Weimer <fweimer@...hat.com> wrote:
> Hi,
>
> we are preparing the glibc 2.23 release upstream and have fixed the
> following security bugs which, to my best knowledge, lack public CVE
> assignment so far:
>
> Passing out of range data to strftime() causes a segfault
> https://sourceware.org/bugzilla/show_bug.cgi?id=18985
>
> Out-of-range time values passed to the strftime function may cause it to
> crash, leading to a denial of service, or potentially disclosure
> information.
>
> LD_POINTER_GUARD is not ignored for privileged binaries
> https://sourceware.org/bugzilla/show_bug.cgi?id=18928
>
> LD_POINTER_GUARD was an environment variable which controls
> security-related behavior, but was not ignored for privileged binaries
> (in AT_SECURE mode). This might allow local attackers (who can supply
> the environment variable) to bypass intended security restrictions.
>
> hcreate((size_t)-1) should fail with ENOMEM
> https://sourceware.org/bugzilla/show_bug.cgi?id=18240
>
> This is an integer overflow in hcreate and hcreate_r which can result in
> an out-of-bound memory access. This could lead to application crashes
> or, potentially, arbitrary code execution.
>
> nan function unbounded stack allocation
> https://sourceware.org/bugzilla/show_bug.cgi?id=16962
>
> A stack overflow (unbounded alloca) can cause applications which process
> long strings with the nan function to crash or, potentially, execute
> arbitrary code.
>
> catopen() Multiple unbounded stack allocations
> https://sourceware.org/bugzilla/show_bug.cgi?id=17905
>
> A stack overflow (unbounded alloca) in the catopen function can cause
> applications which pass long strings to the catopen function to crash
> or, potentially execute arbitrary code.
>
>
> Several people have asked for CVE assignment for swbz#18928 on
> oss-security already.
>
> Thanks,
> Florian
>
--
--
Kurt Seifried -- Red Hat -- Product Security -- Cloud
PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
Red Hat Product Security contact: secalert@...hat.com
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