CVE-2009-0778
What it is
The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a router with a REJECT route, does not properly manage the Protocol Independent Destination Cache (aka DST) in some situations involving transmission of an ICMP Host Unreachable message, which allows remote attackers to cause a denial of service (connectivity outage) by sending a large series of packets to many destination IP addresses within this REJECT route, related to an "rt_cache leak."
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 4.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- 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: 4.6% in the next 30 days (EPSS).
- Severity: 7.1 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 4.6% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel ≤ 2.6.24.7
- Linux Kernel 2.6.0
- Linux Kernel 2.6.1
- Linux Kernel 2.6.2
- Linux Kernel 2.6.3
- Linux Kernel 2.6.4
- Linux Kernel 2.6.5
- Linux Kernel 2.6.6
Attack profile CVSS 2.0 · 7.1
- Attack vector
- Network
- Complexity
- Medium
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
Raw vector
AV:N/AC:M/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-2009-0778.md and follow it. Check whether this project is affected by CVE-2009-0778. 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://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
- http://openwall.com/lists/oss-security/2009/03/11/2
- http://secunia.com/advisories/33758
- http://secunia.com/advisories/37471
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
- http://www.redhat.com/support/errata/RHSA-2009-0326.html
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- http://www.securityfocus.com/bid/34084
- http://www.securitytracker.com/id?1021958
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://www.vupen.com/english/advisories/2009/3316
- https://bugzilla.redhat.com/show_bug.cgi?id=485163
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49199
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7867
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
- http://openwall.com/lists/oss-security/2009/03/11/2
- http://secunia.com/advisories/33758
- http://secunia.com/advisories/37471
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
- http://www.redhat.com/support/errata/RHSA-2009-0326.html
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- http://www.securityfocus.com/bid/34084
- http://www.securitytracker.com/id?1021958
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html