CVE-2026-43623 — microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()
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 mem…
Published: 2026-06-01 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7