CVE-2021-40524

In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)

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/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4	Patch Third Party Advisory
https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50	Patch Third Party Advisory
https://github.com/jedisct1/pure-ftpd/pull/158	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pureftpd:pure-ftpd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-09-05 19:15

Updated : 2021-11-26 19:49

NVD link : CVE-2021-40524

Mitre link : CVE-2021-40524

CVE.ORG link : CVE-2021-40524

JSON object : View

Products Affected

pureftpd

pure-ftpd

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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