VAR-200904-0471
Vulnerability from variot - Updated: 2025-04-10 23:11Format string vulnerability in Fortinet FortiClient 3.0.614, and possibly earlier, allows local users to execute arbitrary code via format string specifiers in the VPN connection name. Fortinet FortiClient is prone to a local format-string vulnerability because it fails to adequately sanitize user-supplied input before passing it to a formatted-printing function. Successfully exploiting this issue will allow local attackers to execute arbitrary code with SYSTEM-level privileges, completely compromising the computer. Failed exploit attempts will likely result in a denial of service. FortiClient 3.0.614 is vulnerable; other versions may also be affected. Fortinet FortiClient is a set of Fortinet company's software solutions that provide security for terminals. It provides features such as IPsec and SSL encryption, WAN optimization, endpoint compliance, and two-factor authentication. ----------------------------------------------------------------------
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TITLE: Fortinet FortiClient VPN Connection Format String Vulnerability
SECUNIA ADVISORY ID: SA34524
VERIFY ADVISORY: http://secunia.com/advisories/34524/
DESCRIPTION: A vulnerability has been reported in Fortinet FortiClient, which can be exploited by malicious, local users to gain escalated privileges. This can be exploited to read and write arbitrary memory with SYSTEM privileges via a specially crafted VPN connection name.
The vulnerability is reported in version 3.0.614.
SOLUTION: Update to version 3.0 MR7 Patch Release 6.
PROVIDED AND/OR DISCOVERED BY: Deral Heiland, Layered Defense
ORIGINAL ADVISORY: http://lists.grok.org.uk/pipermail/full-disclosure/2009-April/068583.html
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/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.
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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.