Denial of service in IBM AIX

Published: 2018-11-09 09:41:37 | Updated: 2018-11-09 09:43:32
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-6922
CVSSv3 7.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:W/RC:C]
CWE ID CWE-400
Exploitation vector Network
Public exploit Not available
Vulnerable software IBM AIX
Vulnerable software versions IBM AIX 7.2
IBM AIX 7.1
IBM AIX 6.1
IBM AIX 5.3
Vendor URL IBM Corporation

Security Advisory

1) Resource exhaustion

Description

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

The vulnerability exists due to the system uses an inefficient TCP reassembly algorithm. A remote attacker can send specially crafted packets within ongoing TCP sessions to consume excessive CPU resources and cause the service to crash.

Remediation

Install update from vendor's website.

External links

http://aix.software.ibm.com/aix/efixes/security/freebsd_advisory.asc

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