Vulnerability Name:

CVE-2016-10377 (CCN-126663)

Assigned:2016-07-22
Published:2016-07-22
Updated:2017-06-08
Summary:In Open vSwitch (OvS) 2.5.0, a malformed IP packet can cause the switch to read past the end of the packet buffer due to an unsigned integer underflow in `lib/flow.c` in the function `miniflow_extract`, permitting remote bypass of the access control list enforced by the switch.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/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): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.8 Medium (CVSS v2 Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-119
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2016-10377

Source: XF
Type: UNKNOWN
openvswitch-cve201610377-sec-bypass(126663)

Source: CCN
Type: Open vSwitch Web site
[ovs-dev] [PATCH] flow: Verify that tot_len >= ip_len in miniflow_extract()

Source: CONFIRM
Type: Mailing List, Patch, Vendor Advisory
https://mail.openvswitch.org/pipermail/ovs-dev/2016-July/319503.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-10377

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openvswitch:openvswitch:2.5.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:openvswitch:openvswitch:2.5.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.trusty:def:201610377000
    V
    		CVE-2016-10377 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-05-29
    oval:com.ubuntu.xenial:def:201610377000
    V
    		CVE-2016-10377 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-29
    oval:com.ubuntu.xenial:def:2016103770000000
    V
    		CVE-2016-10377 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-29
    BACK
    openvswitch openvswitch 2.5.0
    openvswitch openvswitch 2.5.0