REDHAT-BUG-1317383
First published: Mon Mar 14 2016(Updated: )
In the mark_source_chains function (net/ipv4/netfilter/ip_tables.c) it is possible for a user-supplied ipt_entry structure to have a large next_offset field. This field is not bounds checked prior to writing a counter value at the supplied offset. Proposed fix: patch v1 message: <a href="http://marc.info/?l=netfilter-devel&m=145757134822741&w=2">http://marc.info/?l=netfilter-devel&m=145757134822741&w=2</a> patch v2 thread: <a href="http://marc.info/?t=145757149500006&r=1&w=2">http://marc.info/?t=145757149500006&r=1&w=2</a> patch v2 message: <a href="http://marc.info/?l=netfilter-devel&m=145762719008418&w=2">http://marc.info/?l=netfilter-devel&m=145762719008418&w=2</a> patch v2 thread: (none yet) <a href="http://marc.info/?l=netfilter-devel&r=4&b=201603&w=2">http://marc.info/?l=netfilter-devel&r=4&b=201603&w=2</a> CVE request and assignment: <a href="http://seclists.org/oss-sec/2016/q1/581">http://seclists.org/oss-sec/2016/q1/581</a> <a href="http://seclists.org/oss-sec/2016/q1/619">http://seclists.org/oss-sec/2016/q1/619</a> Audit done by netfilter team found several related bugs, patches to better validate rulesets are currently queued in pablos nf-next tree upstream (use "parent" link to cycle to next one - there are 17 additional patches): <a href="https://git.kernel.org/cgit/linux/kernel/git/pablo/nf-next.git/commit/?id=d7591f0c41ce3e67600a982bab6989ef0f07b3ce">https://git.kernel.org/cgit/linux/kernel/git/pablo/nf-next.git/commit/?id=d7591f0c41ce3e67600a982bab6989ef0f07b3ce</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SUSE iptables |
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Reference Links
- http://marc.info/?l=netfilter-devel&m=145757134822741&w=2
- http://marc.info/?t=145757149500006&r=1&w=2
- http://marc.info/?l=netfilter-devel&m=145762719008418&w=2
- http://marc.info/?l=netfilter-devel&r=4&b=201603&w=2
- http://seclists.org/oss-sec/2016/q1/581
- http://seclists.org/oss-sec/2016/q1/619
- https://git.kernel.org/cgit/linux/kernel/git/pablo/nf-next.git/commit/?id=d7591f0c41ce3e67600a982bab6989ef0f07b3ce
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1317384
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1320138
- https://rhn.redhat.com/errata/RHSA-2016-1883.html
- https://rhn.redhat.com/errata/RHSA-2016-1847.html
- https://rhn.redhat.com/errata/RHSA-2016-1875.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1317383
- agent/references
- agent/type
- agent/last-modified-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-3134
- agent/first-publish-date
- agent/source
- agent/severity
- agent/description
- agent/event
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/netfilter
- canonical/suse iptables