CVE-2026-43623
microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-121 |
| Vendor | rxi |
| Product | microtar |
| Published | Jun 1, 2026 |
| Last Updated | Jun 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
rxi / microtar
0 ≤ 0.1.0
References
Credits
Byambadalai Sumiya (@ByamB4) Saidakbarxon Maxsudxonov mms (@3291710458)