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CVE-2019-11477

Integer overflow in TCP_SKB_CB(skb)->tcp_gso_segs

Published: Jun 18, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-190
NVD MITRE
7.5CVSSHIGH
EPSS Score
98.7%
Top 0.1%
CISA KEV
Not in KEV
Exploits
4 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

Linux kernelLinux
On-premOS
Operating Systems
linux kernellinux
On-premOS
Operating Systems
big-ip advanced firewall managerf5
On-premSecurity Product
Networking Infrastructure / firewall
big-ip access policy managerf5
On-premNetwork Device
Networking Infrastructure / firewall
big-ip application acceleration managerf5
On-premNetwork Device
Networking Infrastructure / load-balancer-proxy
linuxoss-projectOperating Systemsaka the linux kernel
f5commercialUSNetworking Infrastructure
and 125 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

4 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.kb.cert.org/vuls/id/905115
kb.cert.org
http://www.openwall.com/lists/oss-security/2019/06/20/3
openwall.com
https://access.redhat.com/errata/RHSA-2019:1594
access.redhat.com
and 88 more references View all →

Timeline

Published
Jun 18, 2019
Last Updated
Nov 21, 2024

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