Symfony up to 2.8.50/3.4.34/4.2.11/4.3.7 MIME Type input validation

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability was found in Symfony up to 2.8.50/3.4.34/4.2.11/4.3.7. It has been rated as critical. Affected by this issue is some unknown functionality of the component MIME Type Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-20. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. If an application passes unvalidated user input as the file for which MIME type validation should occur, then arbitrary arguments are passed to the underlying file command. This is related to symfony/http-foundation (and symfony/mime in 4.3.x).

The weakness was presented 11/21/2019 (Website). The advisory is available at lists.fedoraproject.org. This vulnerability is handled as CVE-2019-18888 since 11/12/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/22/2019).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See 146077 and 146079 for similar entries.

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VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: no mitigation known
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0-Day Time: 🔍

Timelineinfoedit

11/12/2019 🔍
11/21/2019 +9 days 🔍
11/22/2019 +1 days 🔍
11/22/2019 +0 days 🔍

Sourcesinfoedit

Advisory: lists.fedoraproject.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-18888 (🔍)
See also: 🔍

Entryinfoedit

Created: 11/22/2019 08:20 AM
Changes: (17) vulnerability_cwe vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a source_cve_assigned source_cve_nvd_summary
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