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8 vulnerabilities found for microtar by rxi
CVE-2026-71267 (GCVE-0-2026-71267)
Vulnerability from nvd – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46
VLAI
EPSS
VEX
Title
microtar Stack Buffer Overflow in mtar_write_file_header() and mtar_write_dir_header()
Summary
microtar's mtar_write_file_header and mtar_write_dir_header functions (src/microtar.c) copy a caller-supplied entry name into the 100-byte field of a stack-allocated mtar_header_t via strcpy(h.name, name), with no check that strlen(name) is less than 100 before the copy.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:54 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar | third-party-advisory |
| https://github.com/rxi/microtar/blob/master/src/m… | third-party-advisory |
Date Public
2026-08-05 12:26
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CVE-2026-55738 (GCVE-0-2026-55738)
Vulnerability from nvd – Published: 2026-06-17 13:45 – Updated: 2026-08-10 11:44
VLAI
EPSS
VEX
Title
Stack Buffer Overflow in rxi/microtar raw_to_header() via non-null-terminated TAR name field
Summary
A stack-based buffer overflow exists in the raw_to_header function in src/microtar.c in rxi microtar 0.1.0. The function copies the 100-byte name and linkname fields of a TAR header with strcpy without guaranteeing null termination of the source.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:00 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/blob/master/src/m… | product |
| https://github.com/rxi/microtar | product |
| https://raw.githubusercontent.com/rxi/microtar/ma… | technical-description |
Date Public
2026-06-17 13:45
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CVE-2026-54417 (GCVE-0-2026-54417)
Vulnerability from nvd – Published: 2026-06-17 13:25 – Updated: 2026-08-10 11:44
VLAI
EPSS
VEX
Title
Integer Overflow in rxi/microtar mtar_next() Causes Infinite Loop DoS
Summary
An integer overflow in the mtar_next function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:01 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/blob/master/src/m… | product |
| https://github.com/rxi/microtar | product |
| https://raw.githubusercontent.com/rxi/microtar/ma… | technical-description |
Date Public
2026-06-17 13:25
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CVE-2026-43623 (GCVE-0-2026-43623)
Vulnerability from nvd – Published: 2026-06-01 18:04 – Updated: 2026-07-14 20:01 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 15:38 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/issues/28 | issue-tracking |
| https://github.com/rxi/microtar/issues/29 | issue-tracking |
| https://github.com/rxi/microtar/issues/30 | issue-tracking |
| https://www.vulncheck.com/advisories/microtar-sta… | third-party-advisory |
Date Public
2026-02-16 00:00
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CVE-2026-71267 (GCVE-0-2026-71267)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46
VLAI
EPSS
VEX
Title
microtar Stack Buffer Overflow in mtar_write_file_header() and mtar_write_dir_header()
Summary
microtar's mtar_write_file_header and mtar_write_dir_header functions (src/microtar.c) copy a caller-supplied entry name into the 100-byte field of a stack-allocated mtar_header_t via strcpy(h.name, name), with no check that strlen(name) is less than 100 before the copy.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:54 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar | third-party-advisory |
| https://github.com/rxi/microtar/blob/master/src/m… | third-party-advisory |
Date Public
2026-08-05 12:26
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CVE-2026-55738 (GCVE-0-2026-55738)
Vulnerability from cvelistv5 – Published: 2026-06-17 13:45 – Updated: 2026-08-10 11:44
VLAI
EPSS
VEX
Title
Stack Buffer Overflow in rxi/microtar raw_to_header() via non-null-terminated TAR name field
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:00 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/blob/master/src/m… | product |
| https://github.com/rxi/microtar | product |
| https://raw.githubusercontent.com/rxi/microtar/ma… | technical-description |
Date Public
2026-06-17 13:45
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CVE-2026-54417 (GCVE-0-2026-54417)
Vulnerability from cvelistv5 – Published: 2026-06-17 13:25 – Updated: 2026-08-10 11:44
VLAI
EPSS
VEX
Title
Integer Overflow in rxi/microtar mtar_next() Causes Infinite Loop DoS
Summary
An integer overflow in the mtar_next function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:01 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/blob/master/src/m… | product |
| https://github.com/rxi/microtar | product |
| https://raw.githubusercontent.com/rxi/microtar/ma… | technical-description |
Date Public
2026-06-17 13:25
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CVE-2026-43623 (GCVE-0-2026-43623)
Vulnerability from cvelistv5 – Published: 2026-06-01 18:04 – Updated: 2026-07-14 20:01 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 15:38 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/issues/28 | issue-tracking |
| https://github.com/rxi/microtar/issues/29 | issue-tracking |
| https://github.com/rxi/microtar/issues/30 | issue-tracking |
| https://www.vulncheck.com/advisories/microtar-sta… | third-party-advisory |
Date Public
2026-02-16 00:00
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"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"packageURL": "pkg:github/rxi/microtar",
"product": "microtar",
"repo": "https://github.com/rxi/microtar",
"vendor": "rxi",
"versions": [
{
"lessThanOrEqual": "0.1.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Byambadalai Sumiya (@ByamB4)"
},
{
"lang": "en",
"type": "finder",
"value": "Saidakbarxon Maxsudxonov"
},
{
"lang": "en",
"type": "finder",
"value": "mms (@3291710458)"
}
],
"datePublic": "2026-02-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "Stack-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-14T20:01:08.235Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/rxi/microtar/issues/28"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/rxi/microtar/issues/29"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/rxi/microtar/issues/30"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/microtar-stack-based-buffer-overflow-via-raw-to-header"
}
],
"source": {
"discovery": "UNKNOWN"
},
"tags": [
"x_open-source",
"unsupported-when-assigned"
],
"title": "microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-43623",
"datePublished": "2026-06-01T18:04:14.379Z",
"dateReserved": "2026-05-01T18:22:45.640Z",
"dateUpdated": "2026-07-14T20:01:08.235Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}