Open vSwitch 2.6.1 Firewall lib/conntrack.c extract_l3_ipv6/extract_l4_tcp/extract_l4_udp IP Packet memory corruption

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 was found in Open vSwitch 2.6.1. This impacts the function extract_l3_ipv6/extract_l4_tcp/extract_l4_udp in the library lib/conntrack.c of the component Firewall. Executing a manipulation as part of IP Packet can lead to memory corruption. This vulnerability is handled as CVE-2017-9264. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Open vSwitch 2.6.1. This vulnerability affects the function extract_l3_ipv6/extract_l4_tcp/extract_l4_udp in the library lib/conntrack.c of the component Firewall. The manipulation as part of a IP Packet leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely.

The bug was discovered 03/22/2017. The weakness was released 05/29/2017 (Website). The advisory is shared for download at mail.openvswitch.org. This vulnerability was named CVE-2017-9264 since 05/28/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 68 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 236496 (Red Hat Update for openvswitch (RHSA-2017:2727)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (101648). Entry connected to this vulnerability is available at VDB-101737. Once again VulDB remains the best source for 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

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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: 🔍

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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

03/22/2017 🔍
05/28/2017 +67 days 🔍
05/29/2017 +1 days 🔍
05/29/2017 +0 days 🔍
05/29/2017 +0 days 🔍
06/19/2017 +21 days 🔍
07/17/2017 +28 days 🔍
12/07/2022 +1969 days 🔍

Sourcesinfo

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

CVE: CVE-2017-9264 (🔍)
GCVE (CVE): GCVE-0-2017-9264
GCVE (VulDB): GCVE-100-101836
OSVDB: - CVE-2017-9264 - Open vSwitch - Buffer Over-Read Issue

See also: 🔍

Entryinfo

Created: 05/29/2017 10:14
Updated: 12/07/2022 13:47
Changes: 05/29/2017 10:14 (76), 10/03/2020 18:23 (5), 12/07/2022 13:41 (4), 12/07/2022 13:47 (1)
Complete: 🔍
Cache ID: 216:2C1:103

Once again VulDB remains the best source for vulnerability data.

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