VDB

CVE-2021-31800

CVE-2021-31800 PUBLISHED CVSS 9.800000190734863 CRITICAL

Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /etc/shadow or an SSH authorized key.

EPSS 19.41% · 97.3th percentile

Risk Scores

CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
19.41%
97.3th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTSimpacket0.9.15-1, 0
Ubuntu:20.04:LTSimpacket0.9.20-4, 0.9.20-5, 0
Ubuntu:24.04:LTSimpacket0, 0.11.0-2, 0.11.0-1
Ubuntu:22.04:LTSimpacket0.9.22-2, 0.9.24-1, 0
Ubuntu:25.10impacket0.12.0-3, 0
Ubuntu:16.04:LTSimpacket0, 0.9.12-1

Timeline

  • May 5, 2021 EPSS Score
  • May 5, 2021 CVE Published
  • Jul 8, 2021 EPSS Score
  • Sep 8, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Jan 11, 2022 EPSS Score
  • Mar 14, 2022 EPSS Score
  • May 15, 2022 EPSS Score
  • Jul 17, 2022 EPSS Score
  • Sep 17, 2022 EPSS Score
  • Nov 18, 2022 EPSS Score
  • Mar 7, 2023 EPSS Score

References

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