CVE-2020-26277

DBdeployer is a tool that deploys MySQL database servers easily. In DBdeployer before version 1.58.2, users unpacking a tarball may use a maliciously packaged tarball that contains symlinks to files external to the target. In such scenario, an attacker could induce dbdeployer to write into a system file, thus altering the computer defenses. For the attack to succeed, the following factors need to contribute: 1) The user is logged in as root. While dbdeployer is usable as root, it was designed to run as unprivileged user. 2) The user has taken a tarball from a non secure source, without testing the checksum. When the tarball is retrieved through dbdeployer, the checksum is compared before attempting to unpack. This has been fixed in version 1.58.2.

CVSS v3 6.1 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:H/Au:N/C:N/I:P/A:P

Exploitability : 4.9 / Impact : 4.9

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/datacharmer/dbdeployer/commit/548e256c1de2f99746e861454e7714ec6bc9bb10	Patch Third Party Advisory
https://github.com/datacharmer/dbdeployer/security/advisories/GHSA-47wr-426j-fr82	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dbdeployer:dbdeployer:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-12-21 22:15

Updated : 2020-12-23 16:24

NVD link : CVE-2020-26277

Mitre link : CVE-2020-26277

CVE.ORG link : CVE-2020-26277

JSON object : View

Products Affected

dbdeployer

dbdeployer

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2020-26277", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:H/Au:N/C:N/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "HIGH", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 4.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 1.6}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 1.6}]}, "published": "2020-12-21T22:15:13.317", "references": [{"url": "https://github.com/datacharmer/dbdeployer/commit/548e256c1de2f99746e861454e7714ec6bc9bb10", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/datacharmer/dbdeployer/security/advisories/GHSA-47wr-426j-fr82", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "DBdeployer is a tool that deploys MySQL database servers easily. In DBdeployer before version 1.58.2, users unpacking a tarball may use a maliciously packaged tarball that contains symlinks to files external to the target. In such scenario, an attacker could induce dbdeployer to write into a system file, thus altering the computer defenses. For the attack to succeed, the following factors need to contribute: 1) The user is logged in as root. While dbdeployer is usable as root, it was designed to run as unprivileged user. 2) The user has taken a tarball from a non secure source, without testing the checksum. When the tarball is retrieved through dbdeployer, the checksum is compared before attempting to unpack. This has been fixed in version 1.58.2."}, {"lang": "es", "value": "DBdeployer es una herramienta que despliega servidores de bases de datos MySQL f\u00e1cilmente. En DBdeployer versiones anteriores a 1.58.2, los usuarios que descomprimen un tarball pueden usar un tarball paquetizado maliciosamente que contiene enlaces simb\u00f3licos para archivos externos al objetivo. En tal escenario, un atacante podr\u00eda inducir a dbdeployer a escribir en un archivo del sistema, alterando as\u00ed las defensas del ordenador. Para que el ataque tenga \u00e9xito, los siguientes factores deben contribuir: 1) El usuario est\u00e1 registrado como root. Si bien dbdeployer puede ser usado como root, fue dise\u00f1ado para ejecutarse como un usuario sin privilegios. 2) El usuario ha tomado un tarball de una fuente no segura, sin probar el checksum. Cuando el tarball se recupera por medio de dbdeployer, el checksum se compara antes de intentar desempaquetar. Esto se ha abordado en la versi\u00f3n 1.58.2"}], "lastModified": "2020-12-23T16:24:57.797", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dbdeployer:dbdeployer:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB0C4463-CC29-4496-B11B-B6203AEC9F6C", "versionEndExcluding": "1.58.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}