Rapid7 Vulnerability & Exploit Database

Amazon Linux AMI: CVE-2019-11478: Security patch for kernel (ALAS-2019-1222)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Amazon Linux AMI: CVE-2019-11478: Security patch for kernel (ALAS-2019-1222)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
06/13/2019
Created
06/20/2019
Added
06/18/2019
Modified
10/14/2022

Description

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2019-1222
  • CVE-2019-11478
  • USN-4017-1
  • USN-4017-2

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;