SB2017080328 - Fast Datapath for Red Hat Enterprise Linux 7 update for openvswitch
Published: August 3, 2017 Updated: April 24, 2025
Security Bulletin ID
SB2017080328
Severity
High
Patch available
YES
Number of vulnerabilities
4
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Integer underflow (CVE-ID: CVE-2017-9214)
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.
2) Improper input validation (CVE-ID: CVE-2017-9263)
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 improper parsing of an OpenFlow role status message. A remote attacker with access to a malicious switch can send a specially crafted OpenFlow role status message, trigger a call to the abort() function for undefined role status reasons in the ofp_print_role_status_message function in lib/ofp-print.c and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
3) Out-of-bounds read (CVE-ID: CVE-2017-9264)
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.
4) Buffer over-read (CVE-ID: CVE-2017-9265)
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 improper parsing of GroupMod OpenFlow messages. A remote attacker can send a specially crafted GroupMod OpenFlow message from the controller in lib/ofp-util.c in the ofputil_pull_ofp15_group_mod function, 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.