Internet Gatekeeper
CVE-2021-33602
MEDIUM
Vulnerability Assessment
| Impact | CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning engine. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning engine. The vulnerability can be exploited remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine. Affected products include: F-Secure Atlant, F-Secure Cloud Protection, F-Secure Internet Gatekeeper, F-Secure Linux Security.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning engine. The vulnerability can be exploited remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
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A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant and in certain WithSecure products whereby the
A Denial-of-Service vulnerability was discovered in the F-Secure Atlant and in certain WithSecure products while scannin
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant and in certain WithSecure products whereby the
A denial-of-service (DoS) vulnerability was discovered in the web user interface of F-Secure Internet Gatekeeper. Rated
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant and in certain WithSecure products whereby the
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVRDL unpacking module component u
GitHub PoC
Exploit-DB