Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2019-18805

Disclosure Date: November 07, 2019 •
CVE-2019-18805 CVSS v3 Base Score: 9.8
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

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CVSS V3 Severity and Metrics
Base Score:
9.8 Critical
Impact Score:
5.9
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • broadcom,
  • linux,
  • netapp,
  • opensuse,
  • redhat

Products

  • active iq unified manager -,
  • aff a400 firmware -,
  • aff a700s firmware -,
  • data availability services -,
  • e-series santricity os controller,
  • enterprise linux 7.0,
  • fabric operating system -,
  • fas8300 firmware -,
  • fas8700 firmware -,
  • h610s firmware -,
  • hci compute node -,
  • hci management node -,
  • hci storage node -,
  • leap 15.0,
  • leap 15.1,
  • linux kernel,
  • linux kernel 5.1,
  • solidfire -,
  • steelstore cloud integrated storage -
Technical Analysis