SB20170613107 - Fedora 26 update for openvswitch

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Main Vulnerability Database SB20170613107

SB20170613107 - Fedora 26 update for openvswitch

Published: June 13, 2017 Updated: April 24, 2025

Security Bulletin ID SB20170613107
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2017-9264)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to 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. A remote attacker can perform a denial of service attack.


2) Integer underflow (CVE-ID: CVE-2017-9214)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the Open vSwitch (OvS) component due to unsigned integer underflow in the function ofputil_pull_queue_get_config_reply10 in lib/ofp-util.c. when parsing of OFPT_QUEUE_GET_CONFIG_REPLY messages. A remote attacker can send a specially crafted OFPT_QUEUE_GET_CONFIG_REPLY message, trigger buffer over-read and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Remediation

Install update from vendor's website.

References