CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.6	$0-$5k	0.00

A vulnerability was found in Open vSwitch up to 2.2.x/2.3.2/2.4.0. It has been classified as very critical. This affects some unknown processing in the library lib/flow.c of the component ovs-vswitchd. The manipulation as part of a MPLS Packet leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command.

The weakness was released 07/03/2016 by Kashyap Thimmaraju (Website). The advisory is shared at openvswitch.org. This vulnerability is uniquely identified as CVE-2016-2074 since 01/26/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/26/2022).

The vulnerability scanner Nessus provides a plugin with the ID 90252 (Debian DSA-3533-1 : openvswitch - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370838 (Citrix XenServer Multiple Security Updates(CTX232655)).

Upgrading to version 2.3.3 or 2.4.1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (90252).

Productinfo

Vendor

• Open

Name

• vSwitch

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.3.0
• 2.3.1
• 2.3.2
• 2.4

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 90252
Nessus Name: Debian DSA-3533-1 : openvswitch - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703533
OpenVAS Name: Debian Security Advisory DSA 3533-1 (openvswitch - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: vSwitch 2.3.3/2.4.1

Timelineinfo

01/26/2016 🔍
03/28/2016 +62 days 🔍
03/29/2016 +1 days 🔍
03/29/2016 +0 days 🔍
07/03/2016 +96 days 🔍
07/03/2016 +0 days 🔍
07/04/2016 +1 days 🔍
08/26/2022 +2244 days 🔍

Sourcesinfo

Advisory: RHSA-2016:0615
Researcher: Kashyap Thimmaraju
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2074 (🔍)
OVAL: 🔍

SecurityFocus: 85700 - Open vSwitch CVE-2016-2074 Multiple Buffer Overflow Vulnerabilities

Entryinfo

Created: 07/04/2016 10:02
Updated: 08/26/2022 09:39
Changes: 07/04/2016 10:02 (66), 02/15/2019 14:28 (14), 08/26/2022 09:35 (3), 08/26/2022 09:39 (1)
Complete: 🔍

Discussion

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