CVEvulnerability

CVE-2019-11479

7.5 HIGH Published 2019-06-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-06-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0 ([email protected])
5.3 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-405, CWE-770

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.

Affected configurations

• linux linux kernel (>= 4.4 < 4.4.182) • linux linux kernel (>= 4.9 < 4.9.182) • linux linux kernel (>= 4.14 < 4.14.127) • linux linux kernel (>= 4.19 < 4.19.52) • linux linux kernel (>= 5.1 < 5.1.11) • f5 big-ip advanced firewall manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip advanced firewall manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip advanced firewall manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip advanced firewall manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip advanced firewall manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip advanced firewall manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip access policy manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip access policy manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip access policy manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip access policy manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip access policy manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip access policy manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip application acceleration manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip application acceleration manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip application acceleration manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip application acceleration manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip application acceleration manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip application acceleration manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip link controller (>= 11.5.2 < 11.6.5.1) • f5 big-ip link controller (>= 12.1.0 < 12.1.5.1) • f5 big-ip link controller (>= 13.1.0 < 13.1.3.2) • f5 big-ip link controller (>= 14.0.0 < 14.0.1.1) • f5 big-ip link controller (>= 14.1.2 < 14.1.2.1) • f5 big-ip link controller (>= 15.0.0 < 15.0.1.1) • f5 big-ip policy enforcement manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip policy enforcement manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip policy enforcement manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip policy enforcement manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip policy enforcement manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip policy enforcement manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip webaccelerator (>= 11.5.2 < 11.6.5.1) • f5 big-ip webaccelerator (>= 12.1.0 < 12.1.5.1) • f5 big-ip webaccelerator (>= 13.1.0 < 13.1.3.2) • f5 big-ip webaccelerator (>= 14.0.0 < 14.0.1.1) • f5 big-ip webaccelerator (>= 14.1.2 < 14.1.2.1) • f5 big-ip webaccelerator (>= 15.0.0 < 15.0.1.1) • f5 big-ip application security manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip application security manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip application security manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip application security manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip application security manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip application security manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip local traffic manager (>= 11.5.2 < 11.6.5.1) • f5 big-ip local traffic manager (>= 12.1.0 < 12.1.5.1) • f5 big-ip local traffic manager (>= 13.1.0 < 13.1.3.2) • f5 big-ip local traffic manager (>= 14.0.0 < 14.0.1.1) • f5 big-ip local traffic manager (>= 14.1.2 < 14.1.2.1) • f5 big-ip local traffic manager (>= 15.0.0 < 15.0.1.1) • f5 big-ip fraud protection service (>= 11.5.2 < 11.6.5.1) • f5 big-ip fraud protection service (>= 12.1.0 < 12.1.5.1) • f5 big-ip fraud protection service (>= 13.1.0 < 13.1.3.2) • f5 big-ip fraud protection service (>= 14.0.0 < 14.0.1.1) • f5 big-ip fraud protection service (>= 14.1.2 < 14.1.2.1) • f5 big-ip fraud protection service (>= 15.0.0 < 15.0.1.1) • f5 big-ip global traffic manager (>= 11.5.2 < 11.6.5.1) … and 35 more

Related

Weakness · CWE (2)

  • CWE-405 Asymmetric Resource Consumption (Amplification) weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References