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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Affected Vendors & Products
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History
Tue, 02 Jun 2026 16:30:00 +0000
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ssvc
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Mon, 01 Jun 2026 19:00:00 +0000
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| 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. | |
| Title | microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header() | |
| Weaknesses | CWE-121 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-06-02T15:38:50.155Z
Reserved: 2026-05-01T18:22:45.640Z
Link: CVE-2026-43623
Updated: 2026-06-02T15:38:45.078Z
Status : Deferred
Published: 2026-06-01T19:16:46.723
Modified: 2026-06-02T14:43:49.920
Link: CVE-2026-43623
No data.
OpenCVE Enrichment
Updated: 2026-06-01T21:00:15Z