CVE-2009-4537
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 5.9% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 5.9% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 5.9% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Linux Kernel ≤ 2.6.32.3
- Debian Linux 5.0
Attack profile CVSS 2.0 · 7.8
- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
Raw vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-4537.md and follow it. Check whether this project is affected by CVE-2009-4537. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
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://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