CVE-2020-13443

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-13443
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13443.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-13443
Published
2020-06-24T15:15:11Z
Modified
2024-09-03T03:12:05.543935Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).

References

Affected packages

Git / github.com/expressionengine/expressionengine

Affected ranges

Type
GIT
Repo
https://github.com/expressionengine/expressionengine
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

2.*

2.10.1

4.*

4.3.6

5.*

5.0.0
5.0.1
5.0.2
5.1.0
5.1.0-dp.1
5.1.1
5.1.2
5.1.3
5.2.0
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.3.0
5.3.1