Lucene search

K
ubuntucveUbuntu.comUB:CVE-2021-31800
HistoryMay 05, 2021 - 12:00 a.m.

CVE-2021-31800

2021-05-0500:00:00
ubuntu.com
ubuntu.com
15
path traversal
smbserver
impacket
arbitrary code execution
unix

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.014

Percentile

86.5%

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.

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.014

Percentile

86.5%