Important: python3

Issue Overview:

2023-10-30: CVE-2020-26116 was added to this advisory.

2023-10-30: CVE-2020-27619 was added to this advisory.

A flaw was found in Python. The built-in modules httplib and http.client (included in Python 2 and Python 3, respectively) do not properly validate CRLF sequences in the HTTP request method, potentially allowing manipulation to the request by injecting additional HTTP headers. The highest threat from this vulnerability is to confidentiality and integrity. (CVE-2020-26116)

In Python3’s Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP. (CVE-2020-27619)

An XML External Entity (XXE) issue was discovered in Python through 3.9.1. The plistlib module no longer accepts entity declarations in XML plist files to avoid XML vulnerabilities. (CVE-2022-48565)

Affected Packages:

python3

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update python3 to update your system.

New Packages:

aarch64:  
    python3-3.7.10-1.amzn2.0.1.aarch64  
    python3-libs-3.7.10-1.amzn2.0.1.aarch64  
    python3-devel-3.7.10-1.amzn2.0.1.aarch64  
    python3-tools-3.7.10-1.amzn2.0.1.aarch64  
    python3-tkinter-3.7.10-1.amzn2.0.1.aarch64  
    python3-test-3.7.10-1.amzn2.0.1.aarch64  
    python3-debug-3.7.10-1.amzn2.0.1.aarch64  
    python3-debuginfo-3.7.10-1.amzn2.0.1.aarch64  
  
i686:  
    python3-3.7.10-1.amzn2.0.1.i686  
    python3-libs-3.7.10-1.amzn2.0.1.i686  
    python3-devel-3.7.10-1.amzn2.0.1.i686  
    python3-tools-3.7.10-1.amzn2.0.1.i686  
    python3-tkinter-3.7.10-1.amzn2.0.1.i686  
    python3-test-3.7.10-1.amzn2.0.1.i686  
    python3-debug-3.7.10-1.amzn2.0.1.i686  
    python3-debuginfo-3.7.10-1.amzn2.0.1.i686  
  
src:  
    python3-3.7.10-1.amzn2.0.1.src  
  
x86_64:  
    python3-3.7.10-1.amzn2.0.1.x86_64  
    python3-libs-3.7.10-1.amzn2.0.1.x86_64  
    python3-devel-3.7.10-1.amzn2.0.1.x86_64  
    python3-tools-3.7.10-1.amzn2.0.1.x86_64  
    python3-tkinter-3.7.10-1.amzn2.0.1.x86_64  
    python3-test-3.7.10-1.amzn2.0.1.x86_64  
    python3-debug-3.7.10-1.amzn2.0.1.x86_64  
    python3-debuginfo-3.7.10-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2020-26116, CVE-2020-27619, CVE-2022-48565

Mitre: CVE-2020-26116, CVE-2020-27619, CVE-2022-48565