Open vSwitch 2.7.0 OFP Message lib/ofp-util.c ofputil_pull_queue_get_config_reply10 integer underflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Open vSwitch 2.7.0. This impacts the function ofputil_pull_queue_get_config_reply10 in the library lib/ofp-util.c of the component OFP Message Handler. This manipulation causes integer underflow. This vulnerability is tracked as CVE-2017-9214. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Open vSwitch 2.7.0. Affected by this vulnerability is the function ofputil_pull_queue_get_config_reply10 in the library lib/ofp-util.c of the component OFP Message Handler. The manipulation with an unknown input leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Open vSwitch (OvS) 2.7.0, while parsing an OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0 message, there is a buffer over-read that is caused by an unsigned integer underflow in the function `ofputil_pull_queue_get_config_reply10` in `lib/ofp-util.c`.

The bug was discovered 05/20/2017. The weakness was disclosed 05/23/2017 (Website). The advisory is shared at mail.openvswitch.org. This vulnerability is known as CVE-2017-9214 since 05/23/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101648 (Fedora 26 : openvswitch (2017-671e8c760f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170732 (SUSE Enterprise Linux Security Update for openvswitch (SUSE-SU-2018:0311-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (101648). The entry VDB-101836 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101648
Nessus Name: Fedora 26 : openvswitch (2017-671e8c760f)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for openvswitch USN-3450-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

05/20/2017 🔍
05/23/2017 +3 days 🔍
05/23/2017 +0 days 🔍
05/23/2017 +0 days 🔍
05/24/2017 +1 days 🔍
06/19/2017 +26 days 🔍
07/17/2017 +28 days 🔍
12/07/2022 +1969 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-671e8c760f
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9214 (🔍)
GCVE (CVE): GCVE-0-2017-9214
GCVE (VulDB): GCVE-100-101737
OSVDB: - CVE-2017-9214 - Open vSwitch - Integer Underflow Issue

See also: 🔍

Entryinfo

Created: 05/24/2017 08:44
Updated: 12/07/2022 10:04
Changes: 05/24/2017 08:44 (74), 10/02/2020 17:41 (5), 12/07/2022 10:00 (4), 12/07/2022 10:04 (1)
Complete: 🔍
Cache ID: 216:CA3:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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