Vulnerability CVE-2009-4537
Published: 2010-01-12   Modified: 2012-02-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
High
linux:kernel:2.6.25.15 r8169 straighten out overlength frame detection
Neil Horman
14.01.2010

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Kernel 
Linux -> Linux kernel 
Intel -> E1000 
Debian -> Debian linux 

 References:
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://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/oval%3Aorg.mitre.oval%3Adef%3A7443
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9439
https://rhn.redhat.com/errata/RHSA-2010-0095.html
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