CVE-2021-4189

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-4189
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4189.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-4189
Aliases
Related
Published
2022-08-24T16:15:09Z
Modified
2024-09-18T03:18:43.943034Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode. The issue is how the FTP client trusts the host from the PASV response by default. This flaw allows an attacker to set up a malicious FTP server that can trick FTP clients into connecting back to a given IP address and port. This vulnerability could lead to FTP client scanning ports, which otherwise would not have been possible.

References

Affected packages

Debian:11 / pypy3

Package

Name
pypy3
Purl
pkg:deb/debian/pypy3?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.3.5+dfsg-2
7.3.5+dfsg-2+deb11u1
7.3.5+dfsg-2+deb11u2
7.3.6~rc2+dfsg-1
7.3.6~rc2+dfsg-2
7.3.6+dfsg-1
7.3.7+dfsg-1
7.3.7+dfsg-2
7.3.7+dfsg-3
7.3.7+dfsg-4
7.3.7+dfsg-5
7.3.8~rc1+dfsg-1
7.3.8~rc1+dfsg-2
7.3.8+dfsg-1
7.3.8+dfsg-2
7.3.9+dfsg-1
7.3.9+dfsg-2
7.3.9+dfsg-3
7.3.9+dfsg-4
7.3.9+dfsg-5
7.3.10~rc3+dfsg-1
7.3.10~rc3+dfsg-2
7.3.10+dfsg-1
7.3.11+dfsg-1
7.3.11+dfsg-2
7.3.12~rc1+dfsg-1
7.3.12~rc2+dfsg-1
7.3.12+dfsg-1
7.3.13+dfsg-1
7.3.14+dfsg-1
7.3.15+dfsg-1
7.3.16+dfsg-1
7.3.16+dfsg-2
7.3.17+dfsg-1
7.3.17+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / pypy3

Package

Name
pypy3
Purl
pkg:deb/debian/pypy3?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.3.8+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / pypy3

Package

Name
pypy3
Purl
pkg:deb/debian/pypy3?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.3.8+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / python2.7

Package

Name
python2.7
Purl
pkg:deb/debian/python2.7?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.7.18-8
2.7.18-8+deb11u1
2.7.18-9
2.7.18-10
2.7.18-11
2.7.18-12
2.7.18-13
2.7.18-13.1~exp1
2.7.18-13.1
2.7.18-13.2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / python3.9

Package

Name
python3.9
Purl
pkg:deb/debian/python3.9?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.9.2-1
3.9.3-1
3.9.3-2
3.9.4-1
3.9.5-1
3.9.5-2
3.9.5-3
3.9.6-1
3.9.7-1
3.9.7-2
3.9.7-4
3.9.8-1
3.9.8-2
3.9.9-1
3.9.9-2
3.9.9-3
3.9.9-4
3.9.10-1
3.9.10-2
3.9.11-1
3.9.12-1
3.9.13-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/python/cpython

Affected ranges

Type
GIT
Repo
https://github.com/python/cpython
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0ab152c6b5d95caa2dc1a30fa96e10258b5f188e

Affected versions

2.*

2.5

3.*

3.2

v0.*

v0.9.8
v0.9.9

v1.*

v1.0.1
v1.0.2
v1.1
v1.1.1
v1.2
v1.2b1
v1.2b2
v1.2b3
v1.2b4
v1.3
v1.3b1
v1.4
v1.4b1
v1.4b2
v1.4b3
v1.5
v1.5.1
v1.5.2
v1.5.2a1
v1.5.2a2
v1.5.2b1
v1.5.2b2
v1.5.2c1
v1.5a1
v1.5a2
v1.5a3
v1.5a4
v1.5b1
v1.5b2
v1.6a1
v1.6a2

v2.*

v2.0
v2.0b1
v2.0b2
v2.0c1
v2.1
v2.1a1
v2.1a2
v2.1b1
v2.1b2
v2.1c1
v2.1c2
v2.2a3
v2.3c1
v2.3c2
v2.4
v2.4a1
v2.4a2
v2.4a3
v2.4b1
v2.4b2
v2.4c1
v2.5
v2.5.1
v2.5.1c1
v2.5.2
v2.5.2c1
v2.5.3
v2.5.3c1
v2.5.4
v2.5.5
v2.5.5c1
v2.5.5c2
v2.5.6
v2.5.6c1
v2.5a0
v2.5a1
v2.5a2
v2.5b1
v2.5b2
v2.5b3
v2.5c1
v2.5c2
v2.6
v2.6.1
v2.6.2
v2.6.2c1
v2.6.3
v2.6.3rc1
v2.6.4
v2.6.4rc1
v2.6.4rc2
v2.6.5
v2.6.5rc1
v2.6.5rc2
v2.6.6
v2.6.6rc1
v2.6.6rc2
v2.6.7
v2.6.8
v2.6.8rc1
v2.6.8rc2
v2.6a1
v2.6a2
v2.6a3
v2.6b1
v2.6b2
v2.6b3
v2.6rc1
v2.6rc2
v2.7
v2.7.1
v2.7.1rc1
v2.7.2
v2.7.2rc1
v2.7.3
v2.7.3rc1
v2.7.3rc2
v2.7.4rc1
v2.7a1
v2.7a2
v2.7a3
v2.7a4
v2.7b1
v2.7b2
v2.7rc1
v2.7rc2

v3.*

v3.0a1
v3.0a2
v3.0a3
v3.0a4
v3.0a5
v3.0b1
v3.0b2
v3.0b3
v3.0rc1
v3.0rc2
v3.0rc3
v3.1
v3.1.1
v3.1.1rc1
v3.1.2
v3.1.2rc1
v3.1.3
v3.1.3rc1
v3.1.4
v3.1.4rc1
v3.1.5
v3.1.5rc1
v3.1.5rc2
v3.10.0a1
v3.10.0a2
v3.10.0a3
v3.10.0a4
v3.10.0a5
v3.10.0a6
v3.1a1
v3.1a2
v3.1b1
v3.1rc1
v3.1rc2
v3.2
v3.2.1
v3.2.1b1
v3.2.1rc1
v3.2.1rc2
v3.2.2
v3.2.2rc1
v3.2.3
v3.2.3rc1
v3.2.3rc2
v3.2.4
v3.2.4rc1
v3.2.5
v3.2.6
v3.2.6rc1
v3.2a1
v3.2a2
v3.2a3
v3.2a4
v3.2b1
v3.2b2
v3.2rc1
v3.2rc2
v3.2rc3
v3.3.0
v3.3.0a1
v3.3.0a2
v3.3.0a3
v3.3.0a4
v3.3.0b1
v3.3.0b2
v3.3.0rc1
v3.3.0rc2
v3.3.0rc3
v3.3.1
v3.3.1rc1
v3.3.2
v3.3.3
v3.3.3rc1
v3.3.3rc2
v3.3.4
v3.3.4rc1
v3.3.5
v3.3.5rc1
v3.3.5rc2
v3.3.6
v3.3.6rc1
v3.4.0
v3.4.0a1
v3.4.0a2
v3.4.0a3
v3.4.0a4
v3.4.0b1
v3.4.0b2
v3.4.0b3
v3.4.0rc1
v3.4.0rc2
v3.4.0rc3
v3.4.1
v3.4.1rc1
v3.4.2
v3.4.2rc1
v3.4.3
v3.4.3rc1
v3.4.4
v3.4.4rc1
v3.4.5
v3.4.5rc1
v3.4.6
v3.4.6rc1
v3.5.0
v3.5.0a1
v3.5.0a2
v3.5.0a3
v3.5.0a4
v3.5.0b1
v3.5.0b2
v3.5.0b3
v3.5.0b4
v3.5.0rc1
v3.5.0rc2
v3.5.0rc3
v3.5.0rc4
v3.5.1
v3.5.1rc1
v3.5.2
v3.5.2rc1
v3.5.3
v3.5.3rc1
v3.6.0
v3.6.0a1
v3.6.0a2
v3.6.0a3
v3.6.0a4
v3.6.0b1
v3.6.0b2
v3.6.0b3
v3.6.0b4
v3.6.0rc1
v3.6.0rc2
v3.7.0a1
v3.7.0a2
v3.7.0a3
v3.7.0a4
v3.8.0a1
v3.8.0a2
v3.8.0a3
v3.8.0a4
v3.8.0b1
v3.9.0a1
v3.9.0a2
v3.9.0a3
v3.9.0a4
v3.9.0a5
v3.9.0a6