Open vSwitch up to 2.7.6 lib/ofp-actions.c decode_bundle out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability, which was classified as critical, was found in Open vSwitch up to 2.7.6. Affected is the function decode_bundle in the library lib/ofp-actions.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6. The decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding.

The bug was discovered 06/26/2018. The weakness was released 09/19/2018 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2018-17206 since 09/19/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 85 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118745 (RHEL 7 : openvswitch (RHSA-2018:3500)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171775 (SUSE Enterprise Linux Security Update for openvswitch (SUSE-SU-2018:4128-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118745). Entries connected to this vulnerability are available at 124264 and 124265.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

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

NVD Base Score: 4.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118745
Nessus Name: RHEL 7 : openvswitch (RHSA-2018:3500)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: github.com

Timelineinfo

06/26/2018 🔍
09/19/2018 +84 days 🔍
09/19/2018 +0 days 🔍
09/19/2018 +0 days 🔍
09/20/2018 +1 days 🔍
11/05/2018 +46 days 🔍
11/06/2018 +1 days 🔍
05/17/2023 +1653 days 🔍

Sourcesinfo

Advisory: RHSA-2018:3500
Status: Confirmed

CVE: CVE-2018-17206 (🔍)
See also: 🔍

Entryinfo

Created: 09/20/2018 08:20
Updated: 05/17/2023 09:59
Changes: 09/20/2018 08:20 (71), 03/25/2020 13:38 (3), 05/17/2023 09:59 (5)
Complete: 🔍

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