Medium: python

Issue Overview:

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation. (CVE-2019-20907)

Affected Packages:

python

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 python to update your system.

New Packages:

aarch64:  
    python-2.7.18-1.amzn2.0.2.aarch64  
    python-libs-2.7.18-1.amzn2.0.2.aarch64  
    python-devel-2.7.18-1.amzn2.0.2.aarch64  
    python-tools-2.7.18-1.amzn2.0.2.aarch64  
    tkinter-2.7.18-1.amzn2.0.2.aarch64  
    python-test-2.7.18-1.amzn2.0.2.aarch64  
    python-debug-2.7.18-1.amzn2.0.2.aarch64  
    python-debuginfo-2.7.18-1.amzn2.0.2.aarch64  
  
i686:  
    python-2.7.18-1.amzn2.0.2.i686  
    python-libs-2.7.18-1.amzn2.0.2.i686  
    python-devel-2.7.18-1.amzn2.0.2.i686  
    python-tools-2.7.18-1.amzn2.0.2.i686  
    tkinter-2.7.18-1.amzn2.0.2.i686  
    python-test-2.7.18-1.amzn2.0.2.i686  
    python-debug-2.7.18-1.amzn2.0.2.i686  
    python-debuginfo-2.7.18-1.amzn2.0.2.i686  
  
src:  
    python-2.7.18-1.amzn2.0.2.src  
  
x86_64:  
    python-2.7.18-1.amzn2.0.2.x86_64  
    python-libs-2.7.18-1.amzn2.0.2.x86_64  
    python-devel-2.7.18-1.amzn2.0.2.x86_64  
    python-tools-2.7.18-1.amzn2.0.2.x86_64  
    tkinter-2.7.18-1.amzn2.0.2.x86_64  
    python-test-2.7.18-1.amzn2.0.2.x86_64  
    python-debug-2.7.18-1.amzn2.0.2.x86_64  
    python-debuginfo-2.7.18-1.amzn2.0.2.x86_64  

Additional References

Red Hat: CVE-2019-20907

Mitre: CVE-2019-20907