SB20220615144 - Anolis OS update for python38:3.8 module
Published: June 15, 2022 Updated: March 28, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 15 secuirty vulnerabilities.
1) Resource management error (CVE-ID: CVE-2021-3733)
The 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.
2) Infinite loop (CVE-ID: CVE-2021-3737)
The 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.
3) Cross-site scripting (CVE-ID: CVE-2021-43818)
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 within the HTML Cleaner in lxml.html. 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.
4) CRLF injection (CVE-ID: CVE-2022-0391)
The 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.
5) 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.
6) Improper access control (CVE-ID: CVE-2019-20477)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the "load" and "load_all" functions. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.
7) Input validation error (CVE-ID: CVE-2017-18342)
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to insufficient validation of user-supplied input in the "yaml.load()" API (yaml.safe_load is not used). A remote attacker can execute arbitrary code on the target system.
8) Infinite loop (CVE-ID: CVE-2019-20907)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop In Lib/tarfile.py in Python. A remote attacker can create a specially crafted TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.
9) Resource exhaustion (CVE-ID: CVE-2020-14422)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application improperly computes hash values in the IPv4Interface and IPv6Interface classes within the Lib/ipaddress.py in Python. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created.
10) Resource management error (CVE-ID: CVE-2020-8492)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in urllib.request.AbstractBasicAuthHandler when processing HTTP responses. A remote attacker who controls a HTTP server can send a specially crafted HTTP response to the client application and conduct Regular Expression Denial of Service (ReDoS) attack.
11) Code Injection (CVE-ID: CVE-2020-27619)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to Python executed eval() function on the code, retrieved via HTTP protocol in Lib/test/multibytecodec_support.py CJK codec tests. A remote attacker with ability to intercept network traffic can perform a Man-in-the-Middle (MitM) attack and execute arbitrary Python code on the system.
12) 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.
13) 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.
14) Buffer overflow (CVE-ID: CVE-2021-3177)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary within the PyCArg_repr in _ctypes/callproc.c. A remote attacker can pass specially crafted input to the Python applications that accept floating-point numbers as untrusted input, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
15) 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.
Remediation
Install update from vendor's website.