GSD-2019-9686
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL "pacman -U <url>" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman's package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2019-9686",
"description": "pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL \"pacman -U \u003curl\u003e\" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman\u0027s package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c.",
"id": "GSD-2019-9686",
"references": [
"https://security.archlinux.org/CVE-2019-9686"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2019-9686"
],
"details": "pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL \"pacman -U \u003curl\u003e\" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman\u0027s package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c.",
"id": "GSD-2019-9686",
"modified": "2023-12-13T01:23:47.127218Z",
"schema_version": "1.4.0"
}
},
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"affects": {
"vendor": {
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"version": {
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"value": "pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL \"pacman -U \u003curl\u003e\" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman\u0027s package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c."
}
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"references": {
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"name": "https://git.archlinux.org/pacman.git/commit/?id=d197d8ab82cf10650487518fb968067897a12775",
"refsource": "MISC",
"url": "https://git.archlinux.org/pacman.git/commit/?id=d197d8ab82cf10650487518fb968067897a12775"
},
{
"name": "https://git.archlinux.org/pacman.git/commit/?h=release/5.1.x\u0026id=1bf767234363f7ad5933af3f7ce267c123017bde",
"refsource": "MISC",
"url": "https://git.archlinux.org/pacman.git/commit/?h=release/5.1.x\u0026id=1bf767234363f7ad5933af3f7ce267c123017bde"
},
{
"name": "https://git.archlinux.org/pacman.git/commit/?id=9702703633bec2c007730006de2aeec8587dfc84",
"refsource": "MISC",
"url": "https://git.archlinux.org/pacman.git/commit/?id=9702703633bec2c007730006de2aeec8587dfc84"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:pacman_project:pacman:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "5.1.3",
"vulnerable": true
}
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"cve": {
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"description": {
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"value": "pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL \"pacman -U \u003curl\u003e\" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman\u0027s package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://git.archlinux.org/pacman.git/commit/?id=d197d8ab82cf10650487518fb968067897a12775",
"refsource": "MISC",
"tags": [
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"Third Party Advisory"
],
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},
{
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"url": "https://git.archlinux.org/pacman.git/commit/?id=9702703633bec2c007730006de2aeec8587dfc84"
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"name": "https://git.archlinux.org/pacman.git/commit/?h=release/5.1.x\u0026id=1bf767234363f7ad5933af3f7ce267c123017bde",
"refsource": "MISC",
"tags": [
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}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.3,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": true
},
"baseMetricV3": {
"cvssV3": {
"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"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
},
"lastModifiedDate": "2020-11-09T21:45Z",
"publishedDate": "2019-03-11T16:29Z"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- 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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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