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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/18007] New: nss_files file pointer reset during iteration causes application denial of service (CVE-2014-8121)
Date: Mon, 23 Feb 2015 11:24:00 -0000 [thread overview]
Message-ID: <bug-18007-131@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=18007
Bug ID: 18007
Summary: nss_files file pointer reset during iteration causes
application denial of service (CVE-2014-8121)
Product: glibc
Version: 2.21
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: fweimer at redhat dot com
Reporter: fweimer at redhat dot com
Flags: security+
Robin Hack discovered that Samba would enter an infinite loop when processing
quota-related requests. It turns out this is a bug in the nss_files database.
Performing a lookup in the middle of an iteration (say, getwuid between
getpwent) effectively resets the file pointer, so that the iteration starts
again from the beginning.
I'll post a patch to libc-alpha shortly.
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next reply other threads:[~2015-02-23 11:24 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-23 11:24 fweimer at redhat dot com [this message]
2015-02-23 12:03 ` [Bug network/18007] " schwab@linux-m68k.org
2015-02-23 12:06 ` fweimer at redhat dot com
2015-04-29 13:03 ` cvs-commit at gcc dot gnu.org
2015-04-29 13:22 ` schwab@linux-m68k.org
2015-04-29 13:26 ` fweimer at redhat dot com
2015-04-29 13:27 ` fweimer at redhat dot com
2015-04-29 13:32 ` schwab@linux-m68k.org
2015-05-11 8:45 ` cvs-commit at gcc dot gnu.org
2015-05-11 8:48 ` [Bug network/18007] nss state sharing " schwab@linux-m68k.org
2015-05-25 19:17 ` cvs-commit at gcc dot gnu.org
2015-05-26 14:20 ` cvs-commit at gcc dot gnu.org
2015-05-26 20:54 ` cvs-commit at gcc dot gnu.org
2015-07-21 3:11 ` vapier at gentoo dot org
2015-07-21 3:12 ` vapier at gentoo dot org
2015-09-22 9:59 ` schwab@linux-m68k.org
2015-10-19 11:13 ` cvs-commit at gcc dot gnu.org
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