Ubuntu update for python-django



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-32052
CVE-2021-33203
CVE-2021-33571
CWE-ID CWE-113
CWE-22
CWE-918
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

python3-django (Ubuntu package)
Operating systems & Components / Operating system package or component

python-django (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) HTTP response splitting

EUVDB-ID: #VU52942

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-32052

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly processes CRLF character sequences in URLValidator. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Note, the vulnerability affects Django installations on Python 3.9.5+.

Mitigation

Update the affected package python-django to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.04

python3-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

python-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4975-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Path traversal

EUVDB-ID: #VU53741

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-33203

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the "admindocs" view. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Update the affected package python-django to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.04

python3-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

python-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4975-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU53742

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-33571

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the "URLValidator", "validate_ipv4_address()" and "validate_ipv46_address()" . A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Update the affected package python-django to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.04

python3-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

python-django (Ubuntu package): before 1:1.11.11-1ubuntu1.14

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4975-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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