CVE-2009-4537 Information

Description

drivers/net/r8169.c in the r8169 driver in the Linux kernel 2.6.32.3 and earlier does not properly check the size of an Ethernet frame that exceeds the MTU which allows remote attackers to (1) cause a denial of service (temporary network outage) via a packet with a crafted size in conjunction with certain packets containing A characters and certain packets containing E characters; or (2) cause a denial of service (system crash) via a packet with a crafted size in conjunction with certain packets containing ‘\0’ characters related to the value of the status register and erroneous behavior associated with the RxMaxSize register. NOTE: this vulnerability exists because of an incorrect fix for CVE-2009-1389.

Reference

http://blog.c22.cc/2009/12/27/26c3-cat-procsysnetipv4fuckups/ http://events.ccc.de/congress/2009/Fahrplan/events/3596.en.html http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035159.html http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html http://marc.info/?l=linux-netdev&m=126202972828626&w=2 http://marc.info/?t=126202986900002&r=1&w=2 http://secunia.com/advisories/38031 http://secunia.com/advisories/38610 http://secunia.com/advisories/39742 http://secunia.com/advisories/39830 http://secunia.com/advisories/40645 http://securitytracker.com/id?1023419 http://twitter.com/dakami/statuses/7104238406 http://www.debian.org/security/2010/dsa-2053 http://www.novell.com/linux/security/advisories/2010_23_kernel.html http://www.openwall.com/lists/oss-security/2009/12/28/1 http://www.openwall.com/lists/oss-security/2009/12/29/2 http://www.openwall.com/lists/oss-security/2009/12/31/1 http://www.redhat.com/support/errata/RHSA-2010-0019.html http://www.redhat.com/support/errata/RHSA-2010-0020.html http://www.redhat.com/support/errata/RHSA-2010-0041.html http://www.redhat.com/support/errata/RHSA-2010-0053.html http://www.redhat.com/support/errata/RHSA-2010-0111.html http://www.securityfocus.com/bid/37521 http://www.vupen.com/english/advisories/2010/1857 https://bugzilla.redhat.com/show_bug.cgi?id=550907 https://exchange.xforce.ibmcloud.com/vulnerabilities/55647 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A7443 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A9439 https://rhn.redhat.com/errata/RHSA-2010-0095.html