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CVE-2013-4563

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Date: November 19, 2013

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.

Language: C

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2013-4563
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288e
http://www.ubuntu.com/usn/USN-2113-1
http://www.ubuntu.com/usn/USN-2117-1
https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e
https://people.canonical.com/~ubuntu-security/cve/CVE-2013-4563
http://www.openwall.com/lists/oss-security/2013/11/13/9
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
https://bugzilla.redhat.com/show_bug.cgi?id=1030015
https://www.mend.io/vulnerability-database/CVE-2013-4563

Severity Score

Weakness Type (CWE)

Numeric Errors

CWE-189

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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