CVE-2020-1983

Advisory lineage Upstream: 0 Downstream: 29
Modified
Published: 22 Apr 2020, 19:30
Last modified:16 Sept 2024, 19:41

Vulnerability Summary

Overall Risk (default)
medium
40/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.15% LOW
0% probability -0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

22 Apr 2020, 19:30
Published
Vulnerability first disclosed
16 Sept 2024, 19:41
Last Modified
Vulnerability information updated

Description

A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.15%• Percentile: 35%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 19.10 | 20.04

  • debian•debian_linux

    8.0 | 9.0

  • fedoraproject•fedora

    31 | 32

  • libslirp_project•libslirp

    ≤ 4.2.0

  • opensuse•leap

    15.1

  • slirp•libslirp

    ≥ unspecified, ≤ 4.2.0

References (10)