Attacker Value
Unknown
CVE-2019-11479
CVE-2019-11479
(Last updated November 08, 2023) ▾
MITRE ATT&CK
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Description
Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. 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 commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
- canonical,
- f5,
- linux,
- redhat
Products
- big-ip access policy manager,
- big-ip advanced firewall manager,
- big-ip analytics,
- big-ip application acceleration manager,
- big-ip application security manager,
- big-ip domain name system,
- big-ip edge gateway,
- big-ip fraud protection service,
- big-ip global traffic manager,
- big-ip link controller,
- big-ip local traffic manager,
- big-ip policy enforcement manager,
- big-ip webaccelerator,
- big-iq centralized management,
- enterprise linux 7.0,
- enterprise manager 3.1.1,
- iworkflow 2.3.0,
- linux kernel,
- traffix signaling delivery controller,
- ubuntu linux 14.04,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 18.10,
- ubuntu linux 19.04,
- virtualization host 4.0
References
Advisory
Miscellaneous
