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Advisories

modern-tar 0.3.5 through 0.8.5 Memory Exhaustion via Malformed Octal Size Field

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severity
high
date
Affecting

  • modern-tar >= 0.3.5, <= 0.8.5

CWE
  • CWE-1284 Improper Validation of Specified Quantity in Input
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Lum Humolli
Description
modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries.

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