Git · Microtar · CVE-2026-43623
**Name of the Vulnerable Software and Affected Versions**
microtar version 0.1.0
**Description**
A stack-based buffer overflow occurs in the `raw to header()` function within src/microtar.c. This issue allows attackers to corrupt adjacent stack memory by providing a specially crafted TAR archive containing `name` or `linkname` fields that are not null-terminated. The function utilizes `strcpy()` to copy 100-byte ustar format fields; when these fields lack null terminators, it can result in writes of up to 355 bytes into a 100-byte destination buffer. This happens when the `mtar open()`, `mtar find()`, or `mtar read header()` functions process the malicious archive.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.