GSD-2020-15703
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-15703",
"description": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.",
"id": "GSD-2020-15703",
"references": [
"https://ubuntu.com/security/CVE-2020-15703"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-15703"
],
"details": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.",
"id": "GSD-2020-15703",
"modified": "2023-12-13T01:21:44.070987Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2020-09-24T00:00:00.000Z",
"ID": "CVE-2020-15703",
"STATE": "PUBLIC",
"TITLE": "aptdaemon allows unprivileged users to test for the presence of local files via the transaction Locale property"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "aptdaemon",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": " 1.1.1+bzr982-0ubuntu32.2"
},
{
"version_affected": "\u003c",
"version_value": " 1.1.1+bzr982-0ubuntu19.4"
},
{
"version_affected": "\u003c",
"version_value": " 1.1.1+bzr982-0ubuntu14.4"
}
]
}
}
]
},
"vendor_name": "Canonical"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Vaisha Bernard"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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{
"lang": "eng",
"value": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html",
"refsource": "MISC",
"url": "https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html"
},
{
"name": "https://ubuntu.com/security/notices/USN-4537-1",
"refsource": "MISC",
"url": "https://ubuntu.com/security/notices/USN-4537-1"
}
]
},
"source": {
"advisory": "https://ubuntu.com/security/notices/USN-4537-1",
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1888235"
],
"discovery": "EXTERNAL"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "==1.1.1",
"affected_versions": "Version 1.1.1",
"cvss_v2": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-22",
"CWE-937"
],
"date": "2020-11-17",
"description": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.",
"fixed_versions": [],
"identifier": "CVE-2020-15703",
"identifiers": [
"CVE-2020-15703"
],
"not_impacted": "All versions before 1.1.1, all versions after 1.1.1",
"package_slug": "pypi/aptdaemon",
"pubdate": "2020-10-31",
"solution": "Unfortunately, there is no solution available yet.",
"title": "Path Traversal",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-15703"
],
"uuid": "e970f65d-99ff-4432-bd18-33cc79d15fee"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu14.4:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu19.4:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:aptdaemon_project:aptdaemon:1.1.1:bzr982-0ubuntu32.2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
}
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},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"ID": "CVE-2020-15703"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "N/A",
"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html"
},
{
"name": "N/A",
"refsource": "CONFIRM",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://ubuntu.com/security/notices/USN-4537-1"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 2.1,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "LOW",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 1.4
}
},
"lastModifiedDate": "2020-11-17T18:37Z",
"publishedDate": "2020-10-31T04:15Z"
}
}
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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