Important: python3

Issue Overview:

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly.(CVE-2019-9636)

Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a “resize to twice the size” attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. (CVE-2018-20406)

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:  
    python3-3.7.3-1.amzn2.0.1.aarch64  
    python3-libs-3.7.3-1.amzn2.0.1.aarch64  
    python3-devel-3.7.3-1.amzn2.0.1.aarch64  
    python3-tools-3.7.3-1.amzn2.0.1.aarch64  
    python3-tkinter-3.7.3-1.amzn2.0.1.aarch64  
    python3-test-3.7.3-1.amzn2.0.1.aarch64  
    python3-debug-3.7.3-1.amzn2.0.1.aarch64  
    python3-debuginfo-3.7.3-1.amzn2.0.1.aarch64  
  
i686:  
    python3-3.7.3-1.amzn2.0.1.i686  
    python3-libs-3.7.3-1.amzn2.0.1.i686  
    python3-devel-3.7.3-1.amzn2.0.1.i686  
    python3-tools-3.7.3-1.amzn2.0.1.i686  
    python3-tkinter-3.7.3-1.amzn2.0.1.i686  
    python3-test-3.7.3-1.amzn2.0.1.i686  
    python3-debug-3.7.3-1.amzn2.0.1.i686  
    python3-debuginfo-3.7.3-1.amzn2.0.1.i686  
  
src:  
    python3-3.7.3-1.amzn2.0.1.src  
  
x86_64:  
    python3-3.7.3-1.amzn2.0.1.x86_64  
    python3-libs-3.7.3-1.amzn2.0.1.x86_64  
    python3-devel-3.7.3-1.amzn2.0.1.x86_64  
    python3-tools-3.7.3-1.amzn2.0.1.x86_64  
    python3-tkinter-3.7.3-1.amzn2.0.1.x86_64  
    python3-test-3.7.3-1.amzn2.0.1.x86_64  
    python3-debug-3.7.3-1.amzn2.0.1.x86_64  
    python3-debuginfo-3.7.3-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2018-20406, CVE-2019-9636

Mitre: CVE-2018-20406, CVE-2019-9636