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Advisories

microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()

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severity
high
date
Affecting

  • microtar <= 0.1.0

  • An affected version range remains undefined

CWE
  • CWE-121 Stack-based Buffer Overflow
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Byambadalai Sumiya (@ByamB4), Saidakbarxon Maxsudxonov, mms (@3291710458)
Description
microtar through 0.1.0 contains a stack-based buffer overflow vulnerability in the raw_to_header() function in src/microtar.c that allows attackers to corrupt adjacent stack memory by supplying a crafted TAR archive with non-null-terminated name or linkname fields. The function uses strcpy() to copy 100-byte ustar format fields that lack null terminators, causing writes of up to 355 bytes into a 100-byte destination buffer when mtar_open(), mtar_find(), or mtar_read_header() process attacker-supplied TAR archives.

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