SB2021111070 - Red Hat Enterprise Linux 8 update for the python38:3.8 and python38-devel:3.8 modules
Published: November 10, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-23336)
The vulnerability allows a remote attacker to perform web cache spoofing attack.
The vulnerability exists due to insufficient validation of user-supplied input in django.utils.http.limited_parse_qsl() when parsing strings with a semicolon (";"). A remote attacker can pass specially crafted data to the application and perform a spoofing attack.
2) Improper input validation (CVE-ID: CVE-2021-3572)
The vulnerability allows a remote authenticated user to manipulate data.
The vulnerability exists due to improper input validation within the Policy (python-pip) component in Oracle Communications Cloud Native Core Policy. A remote authenticated user can exploit this vulnerability to manipulate data.
3) Path traversal (CVE-ID: CVE-2021-20095)
The vulnerability allows a local user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A local user can load arbitrary files on disk and execute arbitrary code.
4) Double Free (CVE-ID: CVE-2019-18874)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists because of refcount mishandling within a "while" or "for" loop that converts system data into a Python object. A remote attacker can trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Incorrect Regular Expression (CVE-ID: CVE-2020-28493)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect subpattern applied to untrusted input. A remote attacker can pass specially crafted data to the application and perform a regular expression DoS (ReDOS) attack.
6) Improper input validation (CVE-ID: CVE-2021-3426)
The vulnerability allows a remote authenticated user to gain access to sensitive information.
The vulnerability exists due to improper input validation within the Binding Support Function (Python) component in Oracle Communications Cloud Native Core Binding Support Function. A remote authenticated user can exploit this vulnerability to gain access to sensitive information.
7) Path traversal (CVE-ID: CVE-2021-42771)
The vulnerability allows a remote attacker to user compromise the affected system.
The vulnerability exists due to input validation error when processing directory traversal sequences within the locale .dat files in Babel.Locale. A remote user can load a malicious .dat file containing serialized Python objects and execute arbitrary code on the system.
8) Resource exhaustion (CVE-ID: CVE-2021-33503)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in urllib3 when processing URL with multiple "@" characters in the authority component. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
9) Cross-site scripting (CVE-ID: CVE-2021-28957)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
10) Improper input validation (CVE-ID: CVE-2021-29921)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to improper input validation within the Python interpreter and runtime (CPython) component in Oracle GraalVM Enterprise Edition. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.
Remediation
Install update from vendor's website.