CVE-2019-11477 Detail

Current Description

Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). 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 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  Canonical Ltd.
Base Score:  7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en
http://www.openwall.com/lists/oss-security/2019/06/20/3
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
http://www.vmware.com/security/advisories/VMSA-2019-0010.html
https://access.redhat.com/errata/RHSA-2019:1594
https://access.redhat.com/errata/RHSA-2019:1602
https://access.redhat.com/errata/RHSA-2019:1699
https://access.redhat.com/security/vulnerabilities/tcpsack Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=3b4929f65b0d8249f19a50245cd88ed1a2f78cff Mailing List  Patch  Vendor Advisory 
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Patch  Third Party Advisory 
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 Third Party Advisory 
https://kc.mcafee.com/corporate/index?page=content&id=SB10287
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0006
https://security.netapp.com/advisory/ntap-20190625-0001/
https://support.f5.com/csp/article/K78234183 Third Party Advisory 
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic Mitigation  Third Party Advisory 
https://www.kb.cert.org/vuls/id/905115
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.synology.com/security/advisory/Synology_SA_19_28
https://www.us-cert.gov/ics/advisories/icsa-19-253-03

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound cwe source acceptance level NIST   Reference acceptance level Canonical Ltd.  

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Change History

27 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11477
NVD Published Date:
06/18/2019
NVD Last Modified:
10/20/2020
Source:
Canonical Ltd.