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CVE-2021-22118

Published: 27 May 2021

In Spring Framework, versions 5.2.x prior to 5.2.15 and versions 5.3.x prior to 5.3.7, a WebFlux application is vulnerable to a privilege escalation: by (re)creating the temporary storage directory, a locally authenticated malicious user can read or modify files that have been uploaded to the WebFlux application, or overwrite arbitrary files with multipart request data.

Notes

AuthorNote
seth-arnold
I didn't find code in our packages that looks like the patch.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
libspring-java
Launchpad, Ubuntu, Debian
impish Not vulnerable

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

xenial Needed

bionic Not vulnerable

focal Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

trusty Not vulnerable

upstream
Released (5.2.15, 5.3.7)
mantic Not vulnerable

Patches:
upstream: https://github.com/spring-projects/spring-framework/commit/0d0d75e25322d8161002d861fff3ec04ba8be5ac

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H