Vulnerability Name:

CVE-2016-10142 (CCN-124080)

Assigned:2017-01-14
Published:2017-01-14
Updated:2018-05-11
Summary:An issue was discovered in the IPv6 protocol specification, related to ICMP Packet Too Big (PTB) messages. (The scope of this CVE is all affected IPv6 implementations from all vendors.) The security implications of IP fragmentation have been discussed at length in [RFC6274] and [RFC7739]. An attacker can leverage the generation of IPv6 atomic fragments to trigger the use of fragmentation in an arbitrary IPv6 flow (in scenarios in which actual fragmentation of packets is not needed) and can subsequently perform any type of fragmentation-based attack against legacy IPv6 nodes that do not implement [RFC6946]. That is, employing fragmentation where not actually needed allows for fragmentation-based attack vectors to be employed, unnecessarily. We note that, unfortunately, even nodes that already implement [RFC6946] can be subject to DoS attacks as a result of the generation of IPv6 atomic fragments. Let us assume that Host A is communicating with Host B and that, as a result of the widespread dropping of IPv6 packets that contain extension headers (including fragmentation) [RFC7872], some intermediate node filters fragments between Host B and Host A. If an attacker sends a forged ICMPv6 PTB error message to Host B, reporting an MTU smaller than 1280, this will trigger the generation of IPv6 atomic fragments from that moment on (as required by [RFC2460]). When Host B starts sending IPv6 atomic fragments (in response to the received ICMPv6 PTB error message), these packets will be dropped, since we previously noted that IPv6 packets with extension headers were being dropped between Host B and Host A. Thus, this situation will result in a DoS scenario. Another possible scenario is that in which two BGP peers are employing IPv6 transport and they implement Access Control Lists (ACLs) to drop IPv6 fragments (to avoid control-plane attacks). If the aforementioned BGP peers drop IPv6 fragments but still honor received ICMPv6 PTB error messages, an attacker could easily attack the corresponding peering session by simply sending an ICMPv6 PTB message with a reported MTU smaller than 1280 bytes. Once the attack packet has been sent, the aforementioned routers will themselves be the ones dropping their own traffic.
CVSS v3 Severity:8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
8.6 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.8 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
5.1 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
5.0 Medium (REDHAT CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-17
CWE-406
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2016-10142

Source: CCN
Type: IETF Web site
The Internet Engineering Task Force (IETF)

Source: REDHAT
Type: UNKNOWN
RHSA-2017:0817

Source: CCN
Type: IBM Security Bulletin 0728537 (Security Access Manager Appliance)
IBM Security Access Manager Appliance is affected by multiple kernel vulnerabilities

Source: CCN
Type: IBM Security Bulletin 957781 (Security Privileged Identity Manager)
IBM Security Privileged Identity Manager is affected by multiple vulnerabilities

Source: BID
Type: UNKNOWN
95797

Source: CCN
Type: BID-95797
IETF IPv6 Protocol CVE-2016-10142 Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1038256

Source: CCN
Type: Red Hat Bugzilla – Bug 1415908
(CVE-2016-10142) CVE-2016-10142 kernel - IPV6 fragmentation flaw

Source: XF
Type: UNKNOWN
ietf-ipv6-cve201610142-dos(124080)

Source: CCN
Type: Linux Kernel GIT Repository
ipv6: stop sending PTB packets for MTU < 1280

Source: CONFIRM
Type: UNKNOWN
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730

Source: CONFIRM
Type: UNKNOWN
https://support.f5.com/csp/article/K57211290?utm_source=f5support&utm_medium=RSS

Source: MISC
Type: Third Party Advisory
https://tools.ietf.org/html/draft-ietf-6man-deprecate-atomfrag-generation-08

Source: CCN
Type: IETF Web site
Generation of IPv6 Atomic Fragments Considered Harmful

Source: MISC
Type: Third Party Advisory
https://tools.ietf.org/html/rfc8021

Source: CCN
Type: IBM Security Bulletin 0717931 (SAN Volume Controller)
Multiple vulnerabilities in IPv6 and MQ affect IBM SAN Volume Controller, IBM Storwize and IBM FlashSystem products

Source: CCN
Type: IBM Security Bulletin 878903 (Security Directory Suite)
IBM Security Directory Suite is affected by multiple vulnerabilities (CVE-2016-10142, CVE-2015-3331, CVE-2014-2523)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ietf:ipv6:-:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:6::computenode:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:6::workstation:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ietf:ipv6:*:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:security_privileged_identity_manager:2.0.2:*:*:*:*:*:*:*
  • OR cpe:/h:ibm:san_volume_controller:-:*:*:*:*:*:*:*
  • OR cpe:/h:ibm:security_access_manager_appliance:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20170817
    P
    		RHSA-2017:0817: kernel security, bug fix, and enhancement update (Moderate)
    2017-03-21
    oval:com.ubuntu.xenial:def:2016101420000000
    V
    		CVE-2016-10142 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-01-14
    oval:com.ubuntu.precise:def:201610142000
    V
    		CVE-2016-10142 on Ubuntu 12.04 LTS (precise) - medium.
    2017-01-14
    oval:com.ubuntu.trusty:def:201610142000
    V
    		CVE-2016-10142 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-01-14
    oval:com.ubuntu.xenial:def:201610142000
    V
    		CVE-2016-10142 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-01-14
    BACK
    ietf ipv6 -
    ietf ipv6 *
    ibm security privileged identity manager 2.0.2
    ibm san volume controller -
    ibm security access manager appliance -