Loading vulnerability…
CVE-2023-49105 is an improper-authentication vulnerability in ownCloud core versions 10.6.0 through 10.13.0 affecting pre-signed URL validation for WebDAV file operations. When a file owner has no signing key configured, ownCloud can accept attacker-generated pre-signed URLs despite the absence of a valid signing secret. An unauthenticated attacker who knows a target username can impersonate that user in WebDAV requests and access that user's files.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a Python exploit script (pwncloud-webdav.py) targeting ownCloud instances vulnerable to CVE-2023-49105. The exploit demonstrates how an attacker can gain arbitrary access to WebDAV resources, including all files stored by a user, by leveraging the vulnerability. The script sets up a local HTTP proxy server that signs and forwards WebDAV requests to the target ownCloud server, bypassing normal privilege checks. The attacker provides the target ownCloud URL and a valid username as arguments. The README provides a brief description and references an external article for more details. The code is operational and requires the 'ten' Python library. No fake or detection-only scripts are present; the repository is a working exploit for privilege escalation and arbitrary file access on vulnerable ownCloud servers.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An ownCloud authentication-bypass vulnerability involving pre-signed WebDAV links when no signing key is configured. The operator used custom Python scripts to enumerate directories and download files from a Philippine nuclear research body.
An ownCloud flaw that permits forging pre-signed WebDAV URLs when the signing secret is empty, enabling impersonation of accounts and unauthenticated access to their files.
An unauthenticated file-access vulnerability in ownCloud owncloud/core versions 10.6.0 through versions before 10.13.1. If a victim's username is known and the victim has no signing key configured, an attacker can exploit acceptance of pre-signed URLs to access, modify, or delete that victim's files.
A critical ownCloud core authentication bypass vulnerability in the WebDAV API that could allow unauthorized access, modification, or deletion of files when the attacker knows the victim username.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.