VAR-200609-0490
Vulnerability from variot - Updated: 2025-04-03 22:21Buffer overflow in Ipswitch WS_FTP Limited Edition (LE) 5.08 allows remote FTP servers to execute arbitrary code via a long response to a PASV command. Successfully exploiting this issue will result in the complete compromise of affected computers. Failed exploit attempts will result in a denial of service. A remote buffer-overflow vulnerability is reported in the Ipswitch WS_FTP client. This issue occurs because the application fails to properly validate the length of user-supplied strings prior to copying them into finite process buffers. An attacker may exploit this issue to cause the affected client to crash. Execution of arbitrary code in the context of the FTP client process may also be possible. Version 5.08 of the affected software is vulnerable; other versions may be affected as well. Ipswitch WS_FTP Server is an FTP service program suitable for Windows systems. WS_FTP Server has a buffer overflow vulnerability when processing the registered super long SITE command locally. Local attackers may use this vulnerability to elevate their privileges.
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TITLE: WS_FTP LE "PASV" Response Buffer Overflow Vulnerability
SECUNIA ADVISORY ID: SA22032
VERIFY ADVISORY: http://secunia.com/advisories/22032/
CRITICAL: Moderately critical
IMPACT: DoS, System access
WHERE:
From remote
SOFTWARE: WS_FTP LE 5.x http://secunia.com/product/12062/
DESCRIPTION: h07 has discovered a vulnerability in WS_FTP LE, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an error within the handling of responses to the "PASV" command. This can be exploited to cause a buffer overflow by e.g. tricking a user into connecting to a malicious FTP server.
SOLUTION: Connect to trusted FTP servers only.
Use another product.
PROVIDED AND/OR DISCOVERED BY: h07
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.