CVE-2021-24363

Photo Gallery <= 1.5.74 - File Upload Path Traversal

2021-07-18 00:00
avolume

Strategic Overview

Status
Patched in 1.5.75
Affected Plugin
Photo Gallery by 10Web – Mobile-Friendly Image Gallery
Affected Version
< 1.5.75
CVSS
4.9Medium
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE
CVE-2021-24363
View all Photo Gallery by 10Web – Mobile-Friendly Image Gallery vulnerabilities

At a glance

CVE-2021-24363 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Photo Gallery by 10Web WordPress plugin, affecting versions < 1.5.75. It carries a CVSS score of 4.9 (reachable over the network; low attack complexity; high integrity impact). The issue is fixed in version 1.5.75; sites on affected versions should update now. Disclosed July 2021, reported by avolume.

Vulnerability Overview

The Photo Gallery by 10Web – Mobile-Friendly Image Gallery WordPress plugin before 1.5.75 did not ensure that uploaded files are kept inside its uploads folder, allowing high privilege users to put images/SVG anywhere in the filesystem via a path traversal vector

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Reaching this weakness in Photo Gallery by 10Web < 1.5.75 takes a caller who can reach the endpoint. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For Photo Gallery by 10Web the fix is 1.5.75: builds < 1.5.75 are affected, anything from 1.5.75 onward is not.

Remediation

Update to version 1.5.75, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Photo Gallery by 10Web: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Photo Gallery by 10Web 1.5.75 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24363https://www.wordfence.com/threat-intel/vulnerabilities/id/23e0f61b-f122-46f7-83c8-7fcb022c45e9https://nvd.nist.gov/vuln/detail/CVE-2021-24363

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C