Red Hat Software Collections update for python27-python and python27-python-pip
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2021-4189 CVE-2022-0391 CVE-2021-3737 CVE-2021-3733 |
| CWE-ID | CWE-918 CWE-93 CWE-835 CWE-399 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
python27-python (Red Hat package) Operating systems & Components / Operating system package or component python27-python-pip (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Software Collections Universal components / Libraries / Software for developers |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU61681
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-4189
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in the FTP (File Transfer Protocol) client library when using it in PASV (passive) mode. A remote attacker can set up a malicious FTP server, trick the FTP client in Python into connecting back to a given IP address and port, which can lead to FTP client scanning ports which otherwise would not have been possible.
Install updates from vendor's website.
python27-python (Red Hat package): 2.7.8-3.el7 - 2.7.17-2.el7
python27-python-pip (Red Hat package): 8.1.2-2.el7
Red Hat Software Collections: 1 for RHEL 7
External linkshttp://access.redhat.com/errata/RHSA-2022:1663
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) CRLF injection
EUVDB-ID: #VU61675
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-0391
CWE-ID:
CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data within the urllib.parse module in Python. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.
MitigationInstall updates from vendor's website.
python27-python (Red Hat package): 2.7.8-3.el7 - 2.7.17-2.el7
python27-python-pip (Red Hat package): 8.1.2-2.el7
Red Hat Software Collections: 1 for RHEL 7
External linkshttp://access.redhat.com/errata/RHSA-2022:1663
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.
3) Infinite loop
EUVDB-ID: #VU59089
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3737
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop. A remote attacker who controls a malicious server can force the client to enter an infinite loop on a 100 Continue response.
MitigationInstall updates from vendor's website.
python27-python (Red Hat package): 2.7.8-3.el7 - 2.7.17-2.el7
python27-python-pip (Red Hat package): 8.1.2-2.el7
Red Hat Software Collections: 1 for RHEL 7
External linkshttp://access.redhat.com/errata/RHSA-2022:1663
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.
4) Resource management error
EUVDB-ID: #VU58295
Risk: Low
CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3733
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application within the AbstractBasicAuthHandler class in urllib. A remote attacker with control over the server can perform regular expression denial of service attack during authentication.
Install updates from vendor's website.
python27-python (Red Hat package): 2.7.8-3.el7 - 2.7.17-2.el7
python27-python-pip (Red Hat package): 8.1.2-2.el7
Red Hat Software Collections: 1 for RHEL 7
External linkshttp://access.redhat.com/errata/RHSA-2022:1663
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.
