XSS via Delete Attachment in XWiki <15.1-rc-1 / <14.10.6
CVE-2023-35157 Published on June 23, 2023
XWiki Platform vulnerable to reflected cross-site scripting via delattachment action
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It's possible to perform an XSS by forging a request to a delete attachment action with a specific attachment name. Now this XSS can be exploited only if the attacker knows the CSRF token of the user, or if the user ignores the warning about the missing CSRF token. The vulnerability has been patched in XWiki 15.1-rc-1 and XWiki 14.10.6.
Vulnerability Analysis
CVE-2023-35157 can be exploited with network access, requires user interaction and user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2023-35157. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Types
What is a Basic XSS Vulnerability?
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. This may allow such characters to be treated as control characters, which are executed client-side in the context of the user's session. Although this can be classified as an injection problem, the more pertinent issue is the improper conversion of such special characters to respective context-appropriate entities before displaying them to the user.
CVE-2023-35157 has been classified to as a Basic XSS vulnerability or weakness.
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2023-35157 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2023-35157
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Affected Versions
xwiki-platform:- Version >= 3.2-milestone-3, < 14.10.6 is affected.
- Version >= 15.0-rc-0, < 15.1-rc-1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.