VDB-101832 · CVE-2016-10377 · GCVE-0-2016-10377

Open vSwitch 2.5.0 Access Control List lib/flow.c miniflow_extract IP Packet memory corruption

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.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Open vSwitch 2.5.0. Impacted is the function miniflow_extract in the library lib/flow.c of the component Access Control List. The manipulation as part of IP Packet results in memory corruption. This vulnerability is reported as CVE-2016-10377. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Open vSwitch 2.5.0. It has been classified as critical. Affected is the function miniflow_extract in the library lib/flow.c of the component Access Control List. The manipulation as part of a IP 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. CVE summarizes:

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.

The bug was discovered 07/22/2016. The weakness was disclosed 05/29/2017 (Website). The advisory is shared for download at mail.openvswitch.org. This vulnerability is traded as CVE-2016-10377 since 05/28/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 311 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-101836 and VDB-101835 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Open

Name

vSwitch

Version

2.5.0

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/22/2016 🔍
05/28/2017 +310 days 🔍
05/29/2017 +1 days 🔍
05/29/2017 +0 days 🔍
05/29/2017 +0 days 🔍
10/03/2020 +1223 days 🔍

Sourcesinfo

Advisory: mail.openvswitch.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10377 (🔍)
GCVE (CVE): GCVE-0-2016-10377
GCVE (VulDB): GCVE-100-101832
OSVDB: - CVE-2016-10377 - Openvswitch - Openvswitch - Medium

See also: 🔍

Entryinfo

Created: 05/29/2017 10:13
Updated: 10/03/2020 18:02
Changes: 05/29/2017 10:13 (61), 10/03/2020 18:02 (3)
Complete: 🔍
Cache ID: 216::103

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