Loop with Unreachable Exit Condition ('Infinite Loop') Affecting python26-debuginfo package, versions <0:2.6.9-2.92.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.99% (87th percentile)

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  • Snyk IDSNYK-AMZN201803-PYTHON26DEBUGINFO-9905121
  • published30 Apr 2025
  • disclosed13 Jul 2020

Introduced: 13 Jul 2020

CVE-2019-20907  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 python26-debuginfo to version 0:2.6.9-2.92.amzn1 or higher.
This issue was patched in ALAS-2025-1972.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python26-debuginfo package and not the python26-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1