Resource Exhaustion Affecting kernel package, versions <0:4.14.123-111.109.amzn2
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-AMZN2-KERNEL-1670821
- published 27 Sep 2021
- disclosed 19 Jun 2019
Introduced: 19 Jun 2019
CVE-2019-11478 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.123-111.109.amzn2 or higher.
This issue was patched in ALAS2-2019-1222.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
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.
References
- https://seclists.org/bugtraq/2019/Jul/30
- https://www.kb.cert.org/vuls/id/905115
- https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193
- https://kc.mcafee.com/corporate/index?page=content&id=SB10287
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0007
- https://security.netapp.com/advisory/ntap-20190625-0001/
- https://support.f5.com/csp/article/K26618426
- https://www.synology.com/security/advisory/Synology_SA_19_28
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt
- http://www.vmware.com/security/advisories/VMSA-2019-0010.html
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11478
- http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.html
- http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
- http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
- https://access.redhat.com/security/vulnerabilities/tcpsack
- https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
- https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=f070ef2ac66716357066b683fb0baf55f8191a2e
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.us-cert.gov/ics/advisories/icsa-19-253-03
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- http://www.openwall.com/lists/oss-security/2019/07/06/3
- http://www.openwall.com/lists/oss-security/2019/07/06/4
- http://www.openwall.com/lists/oss-security/2019/10/24/1
- http://www.openwall.com/lists/oss-security/2019/10/29/3
- https://access.redhat.com/errata/RHSA-2019:1594
- https://access.redhat.com/errata/RHSA-2019:1602
- https://access.redhat.com/errata/RHSA-2019:1699