Sichere dein Linux System mit dem ClamAV Virenscanner! In diesem Video zeige ich dir, wie du ClamAV einrichten und mit ClamTK konfigurieren kannst, um dein System vor Viren zu schützen.
Erfahre, wie du den on-demand Virenscanner einrichtest und wie du einen regelmäßigen Scan zur Überprüfung deines PCs konfigurierst. Mit diesen Schritten sorgst du für eine effektive Virusabwehr.
A vulnerability tracked as CVE-2024-20290 was identified in the OLE2 file format parser of ClamAV, a widely used open-source antivirus engine. This vulnerability could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The core issue arises from an incorrect check for end-of-string values during the scanning process, leading to a potential heap buffer over-read. An attacker can exploit this flaw by sending a specially crafted file containing OLE2 content to be scanned by ClamAV on the targeted device. Successful exploitation would cause the ClamAV scanning process to terminate unexpectedly, resulting in a DoS condition that consumes available system resources.
The vulnerability has been given a CVSS v3 base score of 7.5, indicating a high severity level. The scoring reflects the following characteristics: the attack vector is network-based, the complexity of the attack is low, no privileges are required to exploit it, and no user interaction is needed. The primary impact is on the availability of the affected system, with no direct impact on confidentiality or integrity.
Cisco, the organization behind ClamAV, has acknowledged the issue and released software updates to address the vulnerability. There are no known workarounds that could mitigate this vulnerability, emphasizing the importance of applying the available patches to prevent potential attacks.
For further details on this vulnerability and the associated fixes, refer to the official advisories from Cisco
When using #clamscan, don't be tempted to change various file #permissions under #root when you notice #clamav can't scan everything. Rather than risk impacting the #security of those files, scan more relevant directories, which are more likely to be targeted, e.g. for a #server hosting a small site: /var/www, /var/log, /home, /bin etc. This also reduces resource usage. 👍 #gnu#linux#cli