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A zero-day attack begins with a hacker discovering a zero-day vulnerability, which is an error in code or software that the target has yet to discover. The attacker then works on a zero-day exploit, a method of attack, that they can use to take advantage of the existing vulnerability.
- A zero-day attack is so-called because it occurs before the target is aware that the vulnerability exists.
- Yes, if companies remain vigilant against the threat of zero-day attacks, businesses must have a strategy in place.
- A zero-day attack can happen to any company at any time, often without them realizing. High-profile examples of zero-day attacks include:Sony Pictu...
FortiGuard Labs is Fortinet's in-house security research and response team, with over 10 years of proven threat prevention leadership, specializing in developing new adaptive defense tools to help protect against multi-vector zero day attacks.
15 de mar. de 2023 · This involved the use of a local zero-day vulnerability in FortiOS (CVE-2022-41328) and deployment of multiple custom malware families on Fortinet and VMware systems. Mandiant published...
11 de out. de 2022 · Fortinet on Monday made public an advisory for CVE-2022-40684 and warned that it’s aware of one attack involving exploitation of the zero-day. The company has provided an indicator of compromise (IoC) that customers can use to check if their appliances have been hacked.
- Contributing Editor
- Background
- Analysis
- Solution
- Identifying Affected Systems
On December 9 Olympe Cyberdefense publisheda brief summary of a vulnerability affecting several versions of Fortinet FortiOS used in its FortiGate secure socket layer virtual private network (SSL VPN) and firewall products. Fortinet followed up on December 12 with an advisory which elaborated that the vulnerability has been observed under exploitat...
CVE-2022-42475is a heap-based buffer overflow in several versions of ForiOS that received a CVSSv3 score of 9.3. A remote, unauthenticated attacker could exploit this vulnerability with a specially crafted request and gain code execution. The blog from Olympe Cyberdefense goes further, stating attackers could gain “full control.” On January 11, For...
According to Fortinet’s advisory, the following are the affected versions of FortiOS and the relevant fixed versions: Fortinet’s advisory also includes indicators of compromise (IoC) for the observed exploitation of this flaw. The advisory from Fortinet recommends reviewing systems for these IoCs as does the blog from Olympe Cyberdefense.
A list of Tenable plugins to identify this vulnerability can be found here. This link uses a search filter to ensure that all matching plugin coverage will appear as it is released. In addition, plugin ID 73522 can be used to identify Fortinet devices in your network. A Tenable audit with best practices for Fortigate FortiOS is also available herew...
To defend against zero-day buffer overflow, buffer underflow, shell code, and similar injection attacks that you have not yet identified and created a signature for, input validation can help. You can configure FortiWeb to sanitize inputs at the web application level.
16 de mar. de 2023 · A suspected Chinese hacking group has been linked to a series of attacks on government organizations exploiting a Fortinet zero-day vulnerability (CVE-2022-41328) to deploy malware.
