SB2017101111 - Ubuntu update for Open vSwitch
Published: October 11, 2017
Security Bulletin ID
SB2017101111
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 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.
Remediation
Install update from vendor's website.