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ubuntucveUbuntu.comUB:CVE-2022-21221
HistoryMar 17, 2022 - 12:00 a.m.

CVE-2022-21221

2022-03-1700:00:00
ubuntu.com
ubuntu.com
33
cve-2022-21221
directory traversal
servefile function
windows users

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

61.6%

The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to
Directory Traversal via the ServeFile function, due to improper
sanitization. It is possible to be exploited by using a backslash %5c
character in the path. Note: This security issue impacts Windows users
only.

Notes

Author Note
mdeslaur windows-specific

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

61.6%