Unrated

WebLink Authentication Bypass in Wing FTP Server

IdentifiersCVE-2014-4680CWE-287

CVE-2014-4680 is an authentication bypass vulnerability in the HTTP server component of Wing FTP Server 4.3.7 and earlier on Windows. The flaw affects the WebLink mechanism used to generate URLs for file downloads. Authenticated users can create WebLink URLs that are intended to permit controlled access to files, but due to insufficient enforcement of the WebLink token, unauthenticated users can access the linked files by using only a truncated portion of the generated hash value. Reported behavior indicates that 8.3 alias handling allows WebLinks to be accessed using only the first six characters of the hash, undermining the intended access control on shared files.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows bypass of intended WebLink authentication protections and unauthorized download of files from the server by unauthenticated users. The primary impact is loss of confidentiality for files exposed through WebLink functionality. Depending on deployment and the sensitivity of shared content, this could result in disclosure of internal, proprietary, or otherwise restricted data.

Mitigation

If you can’t patch tonight, do this now.

If immediate upgrade is not possible, disable or restrict WebLink-based file sharing through the Wing FTP HTTP interface, limit exposure of the HTTP service to trusted networks or users, and avoid publishing sensitive files through WebLink functionality. Monitor access logs for anomalous unauthenticated downloads of shared files and review any existing WebLinks for unnecessary exposure.

Remediation

Patch, then assume compromise.

Upgrade Wing FTP Server to version 4.3.8 or later, as the vendor addressed the issue in that release. Validate that WebLink access controls function correctly after upgrade, particularly that full token validation is enforced and truncated or alternate path representations cannot be used to retrieve protected files.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Wing FTP Server teamWing Ftp Serverapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

1 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity