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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.

🗓️ 18 Aug 2020 07:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 2 Views

Python tarfile up to 3.8.3 allows infinite loop when opening a crafted TAR due to _proc_pax flaw.

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Vulners
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27 May 2025 07:00Current
7.3High risk
Vulners AI Score7.3
CVSS 25
CVSS 3.17.5
EPSS0.00323
python tarfilecrafted tarinfinite looppax header flaw
2