CVE-2019-18805

Advisory lineage Upstream: 0 Downstream: 19
Modified
Published: 07 Nov 2019, 13:08
Last modified:05 Aug 2024, 02:02

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
0.57% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Nov 2019, 13:08
Published
Vulnerability first disclosed
05 Aug 2024, 02:02
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.57%• Percentile: 69%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • broadcom•fabric_operating_system

    na

  • linux•linux_kernel

    ≥ 4.4, < 4.4.180 | ≥ 4.9, < 4.9.172 | ≥ 4.14, < 4.14.115 | ≥ 4.19, < 4.19.38 | ≥ 5.0, < 5.0.11 | 5.1:rc1 | 5.1:rc2 | 5.1:rc3 | 5.1:rc4 | 5.1:rc5 | 5.1:rc6 | 5.1:rc7

  • netapp•active_iq_unified_manager

    na

  • netapp•aff_a400_firmware

    na

  • netapp•aff_a700s

    na

  • netapp•data_availability_services

    na

  • netapp•e-series_santricity_os_controller

    ≥ 11.0.0, ≤ 11.60.3

  • netapp•fas8300_firmware

    na

  • netapp•fas8700_firmware

    na

  • netapp•h610s_firmware

    na

  • netapp•hci_compute_node_firmware

    na

  • netapp•hci_management_node

    na

  • netapp•hci_storage_node

    na

  • netapp•solidfire

    na

  • netapp•steelstore_cloud_integrated_storage

    na

  • opensuse•leap

    15.0 | 15.1

  • redhat•enterprise_linux

    7.0

References (6)