CVE-2016-3134: Buffer Overflow

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&amp;m=145757134822741&amp;w=2">http://marc.info/?l=netfilter-devel&amp;m=145757134822741&amp;w=2</a> patch v2 thread: <a href="http://marc.info/?t=145757149500006&amp;r=1&amp;w=2">http://marc.info/?t=145757149500006&amp;r=1&amp;w=2</a> patch v2 message: <a href="http://marc.info/?l=netfilter-devel&amp;m=145762719008418&amp;w=2">http://marc.info/?l=netfilter-devel&amp;m=145762719008418&amp;w=2</a> patch v2 thread: (none yet) <a href="http://marc.info/?l=netfilter-devel&amp;r=4&amp;b=201603&amp;w=2">http://marc.info/?l=netfilter-devel&amp;r=4&amp;b=201603&amp;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>

Credit: meissner@suse.de security@opentext.com meissner@suse.de

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/type
• collector/launchpad-cve
• source/Launchpad
• collector/redhat-bugzilla
• source/Red Hat
• alias/CVE-2016-3134
• agent/severity
• agent/author
• agent/weakness
• collector/nvd-index
• agent/software-canonical-lookup-request
• collector/nvd-api
• collector/mitre-cve
• source/MITRE
• collector/usn-cve
• source/Ubuntu
• agent/references
• agent/remedy
• agent/description
• agent/first-publish-date
• agent/tags
• agent/event
• collector/nvd-cve
• source/NVD
• agent/software-canonical-lookup
• agent/last-modified-date
• collector/security-tracker-debian
• source/Debian
• agent/softwarecombine
• agent/trending
• vendor/novell
• canonical/novell suse linux enterprise software development kit
• version/novell suse linux enterprise software development kit/11.0-sp4
• version/novell suse linux enterprise software development kit/12.0
• version/novell suse linux enterprise software development kit/12.0-sp1
• canonical/novell suse linux enterprise debuginfo
• version/novell suse linux enterprise debuginfo/11.0-sp4
• canonical/novell suse linux enterprise desktop
• version/novell suse linux enterprise desktop/12.0
• version/novell suse linux enterprise desktop/12.0-sp1
• canonical/novell suse linux enterprise live patching
• version/novell suse linux enterprise live patching/12.0
• canonical/novell suse linux enterprise module for public cloud
• version/novell suse linux enterprise module for public cloud/12.0
• canonical/novell suse linux enterprise real time extension
• version/novell suse linux enterprise real time extension/12.0-sp1
• canonical/novell suse linux enterprise server
• version/novell suse linux enterprise server/11.0-extra
• version/novell suse linux enterprise server/11.0-sp4
• version/novell suse linux enterprise server/12.0
• version/novell suse linux enterprise server/12.0-sp1
• canonical/novell suse linux enterprise workstation extension
• version/novell suse linux enterprise workstation extension/12.0
• version/novell suse linux enterprise workstation extension/12.0-sp1
• vendor/linux
• canonical/linux linux kernel
• version/linux linux kernel/4.5.2
• package-manager/debian