gsd-2020-1733
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p <dir>"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-1733",
"description": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 \u0026\u0026 mkdir -p \u003cdir\u003e\"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating \u0027/proc/\u003cpid\u003e/cmdline\u0027.",
"id": "GSD-2020-1733",
"references": [
"https://www.suse.com/security/cve/CVE-2020-1733.html",
"https://www.debian.org/security/2021/dsa-4950",
"https://access.redhat.com/errata/RHSA-2020:1544",
"https://access.redhat.com/errata/RHSA-2020:1543",
"https://access.redhat.com/errata/RHSA-2020:1542",
"https://access.redhat.com/errata/RHSA-2020:1541",
"https://advisories.mageia.org/CVE-2020-1733.html",
"https://ubuntu.com/security/CVE-2020-1733"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-1733"
],
"details": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 \u0026\u0026 mkdir -p \u003cdir\u003e\"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating \u0027/proc/\u003cpid\u003e/cmdline\u0027.",
"id": "GSD-2020-1733",
"modified": "2023-12-13T01:21:58.446779Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2020-1733",
"STATE": "PUBLIC"
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"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Ansible",
"version": {
"version_data": [
{
"version_value": "2.7.17 and prior"
},
{
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},
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}
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"value": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 \u0026\u0026 mkdir -p \u003cdir\u003e\"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating \u0027/proc/\u003cpid\u003e/cmdline\u0027."
}
]
},
"impact": {
"cvss": [
[
{
"vectorString": "5/CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L",
"version": "3.0"
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"value": "CWE-377"
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"refsource": "CONFIRM",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733"
},
{
"name": "https://github.com/ansible/ansible/issues/67791",
"refsource": "MISC",
"url": "https://github.com/ansible/ansible/issues/67791"
},
{
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"url": "https://www.debian.org/security/2021/dsa-4950"
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"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c=2.7.16||\u003e=2.8.0,\u003c2.8.8||\u003e=2.9.0,\u003c=2.9.5",
"affected_versions": "All versions up to 2.7.16, all versions starting from 2.8.0 before 2.8.8, all versions starting from 2.9.0 up to 2.9.5",
"cvss_v2": "AV:L/AC:H/Au:N/C:P/I:P/A:P",
"cvss_v3": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-668",
"CWE-937"
],
"date": "2021-08-07",
"description": "A race condition flaw was found in Ansible Engine when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in `/var/tmp`. This directory is created with `umask \u0026\u0026 mkdir -p \u003cdir\u003e`; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating `/proc/\u003cpid\u003e/cmdline`.",
"fixed_versions": [
"2.7.17",
"2.8.8",
"2.9.6"
],
"identifier": "CVE-2020-1733",
"identifiers": [
"CVE-2020-1733"
],
"not_impacted": "All versions after 2.7.16 before 2.8.0, all versions starting from 2.8.8 before 2.9.0, all versions after 2.9.5",
"package_slug": "pypi/ansible",
"pubdate": "2020-03-11",
"solution": "Upgrade to versions 2.7.17, 2.8.8, 2.9.6 or above.",
"title": "Exposure of Resource to Wrong Sphere",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-1733",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733"
],
"uuid": "32501cab-be64-452f-a297-fa90e9fb0eb0"
}
]
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"operator": "OR"
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "HIGH",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 3.7,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:H/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 1.9,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "LOW",
"userInteractionRequired": true
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 0.8,
"impactScore": 3.7
}
},
"lastModifiedDate": "2022-04-25T17:37Z",
"publishedDate": "2020-03-11T19:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.