CVE-2021-26843

An issue was discovered in sthttpd through 2.27.1. On systems where the strcpy function is implemented with memcpy, the de_dotdot function may cause a Denial-of-Service (daemon crash) due to overlapping memory ranges being passed to memcpy. This can triggered with an HTTP GET request for a crafted filename. NOTE: this is similar to CVE-2017-10671, but occurs in a different part of the de_dotdot function.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/blueness/sthttpd/issues/14	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:sthttpd_project:sthttpd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-02-07 21:15

Updated : 2024-02-04 21:23

NVD link : CVE-2021-26843

Mitre link : CVE-2021-26843

CVE.ORG link : CVE-2021-26843

JSON object : View

Products Affected

sthttpd_project

sthttpd

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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