Resource Exhaustion Affecting perf package, versions <0:4.14.123-111.109.amzn2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2-PERF-1670951
- published27 Sept 2021
- disclosed19 Jun 2019
Introduced: 19 Jun 2019
CVE-2019-11478 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 perf 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 perf package and not the perf 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