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CVE-2009-0778

UnknownEPSS 4.62%

Last modified

CVE-2009-0778 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 4.62% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability
4.62%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 2.6.24.7
LinuxLinux Kernel2.6.0
LinuxLinux Kernel2.6.1
LinuxLinux Kernel2.6.2
LinuxLinux Kernel2.6.3
LinuxLinux Kernel2.6.4
LinuxLinux Kernel2.6.5
LinuxLinux Kernel2.6.6
LinuxLinux Kernel2.6.7
LinuxLinux Kernel2.6.8
LinuxLinux Kernel2.6.8.1
LinuxLinux Kernel2.6.9
LinuxLinux Kernel2.6.10
LinuxLinux Kernel2.6.11
LinuxLinux Kernel2.6.11.1
LinuxLinux Kernel2.6.11.2
LinuxLinux Kernel2.6.11.3
LinuxLinux Kernel2.6.11.4
LinuxLinux Kernel2.6.11.5
LinuxLinux Kernel2.6.11.6
LinuxLinux Kernel2.6.11.7
LinuxLinux Kernel2.6.11.8
LinuxLinux Kernel2.6.11.9
LinuxLinux Kernel2.6.11.10
LinuxLinux Kernel2.6.11.11
LinuxLinux Kernel2.6.11.12
LinuxLinux Kernel2.6.12
LinuxLinux Kernel2.6.12.1
LinuxLinux Kernel2.6.12.2
LinuxLinux Kernel2.6.12.3
LinuxLinux Kernel2.6.12.4
LinuxLinux Kernel2.6.12.5
LinuxLinux Kernel2.6.12.6
LinuxLinux Kernel2.6.13
LinuxLinux Kernel2.6.13.1
LinuxLinux Kernel2.6.13.2
LinuxLinux Kernel2.6.13.3
LinuxLinux Kernel2.6.13.4
LinuxLinux Kernel2.6.13.5
LinuxLinux Kernel2.6.14
LinuxLinux Kernel2.6.14.1
LinuxLinux Kernel2.6.14.2
LinuxLinux Kernel2.6.14.3
LinuxLinux Kernel2.6.14.4
LinuxLinux Kernel2.6.14.5
LinuxLinux Kernel2.6.14.6
LinuxLinux Kernel2.6.14.7
LinuxLinux Kernel2.6.15
LinuxLinux Kernel2.6.15.1
LinuxLinux Kernel2.6.15.2

Showing 50 of 238 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-0778?
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."
How severe is CVE-2009-0778?
Severity scoring for CVE-2009-0778 is pending analysis. The EPSS model estimates a 4.62% probability of exploitation in the next 30 days.
How do I fix CVE-2009-0778?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0778?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST