TFTP: Linux Kernel Crafted UDP Packet Handling Remote Denial of Service
This signature detects attempts to exploit a known vulnerability against Linux Kernel through 3.12. A successful attack can result in a denial-of-service condition.
Extended Description
The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly perform a certain size comparison before inserting a fragment header, which allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet, as demonstrated by use of the Token Bucket Filter (TBF) queueing discipline.
Affected Products
Canonical ubuntu_linux
Short Name
TFTP:DOS:LINUX-KERNEL
Severity
Minor
Recommended
False
Recommended Action
Drop
Category
TFTP
Keywords
CVE-2013-4563 Crafted Denial Handling Kernel Linux Packet Remote Service UDP bid:63702 of
Release Date
09/25/2014
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3600
False Positive
Unknown
Vendors
Canonical
Linux
CVSS Score
7.1