SB2020012211 - Integer overflow in Oracle Communications Subscriber-Aware Load Balancer

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Main Vulnerability Database SB2020012211

SB2020012211 - Integer overflow in Oracle Communications Subscriber-Aware Load Balancer

Published: January 22, 2020

Security Bulletin ID SB2020012211
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Integer overflow (CVE-ID: CVE-2019-11477)

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

The vulnerability exists due to integer overflow when handling TCP Selective Acknowledgments (SACKs) due to incorrect processing of TCP_SKB_CB(skb)->tcp_gso_segs value in Linux kernel. A remote non-authenticated attacker can send specially crafted network traffic to the affected system, trigger integer overflow and render the system unavailable.

Successful exploitation of the vulnerability allows a remote attacker to perform denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References