CVE-2021-40524

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.)

7.5 /10

CVSS v3 : HIGH

V3 Legend

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

V2 Legend

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

26 Nov 2021, 19:49

Type Values Removed Values Added
CPE cpe:2.3:a:pureftpd:pure-ftpd:1.0.49:*:*:*:*:*:*:* cpe:2.3:a:pureftpd:pure-ftpd:*:*:*:*:*:*:*:*
References (CONFIRM) https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4 - (CONFIRM) https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4 - Patch, Third Party Advisory
References (CONFIRM) https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50 - (CONFIRM) https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50 - Patch, Third Party Advisory

24 Nov 2021, 09:15

Type Values Removed Values Added
Summary In Pure-FTPd 1.0.49, 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. 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.)
References
  • (CONFIRM) https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4 -
  • (CONFIRM) https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50 -

10 Sep 2021, 19:57

Type Values Removed Values Added
CWE CWE-434
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:pureftpd:pure-ftpd:1.0.49:*:*:*:*:*:*:*
References (MISC) https://github.com/jedisct1/pure-ftpd/pull/158 - (MISC) https://github.com/jedisct1/pure-ftpd/pull/158 - Exploit, Third Party Advisory

05 Sep 2021, 19:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-09-05 19:15

Updated : 2023-12-10 13:55

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