High severity · published Nov 21, 2019
CVE-2019-18888
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
7.5
CVSS
2.2%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
30; 31 · source: NVD
SY
Symfony · Sensiolabs
2.8.0 through 2.8.50; 3.4.0 through 3.4.34; 4.2.0 through 4.2.11; 4.3.0 through 4.3.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-18888
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-18888
Release Notes
https://github.com/symfony/symfony/releases/tag/v4.3.8
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/
Vendor Advisory
https://symfony.com/blog/cve-2019-18888-prevent-argument-injection-in-a-mimetypeguesser
Release Notes
https://symfony.com/blog/symfony-4-3-8-released
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