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CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. • https://www.zerodayinitiative.com/advisories/ZDI-24-1003 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. • https://www.zerodayinitiative.com/advisories/ZDI-24-1004 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. • https://www.zerodayinitiative.com/advisories/ZDI-24-1005 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •

CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0

An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files. Se presenta una vulnerabilidad de elevación de privilegios en Avast Free Antivirus y AVG AntiVirus Free versiones anteriores a 20.4, debido a un manejo inapropiado de los enlaces físicos. La vulnerabilidad permite a usuarios locales tomar el control de archivos arbitrarios • https://forum.avast.com/index.php?topic=232423.0 https://forum.avast.com/index.php?topic=234638.0 •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 1

Avast Free Antivirus prior to 19.1.2360 stores user credentials in memory upon login, which allows local users to obtain sensitive information by dumping AvastUI.exe application memory and parsing the data. Avast Free Antivirus, en versiones anteriores a la 19.1.2360, almacena credenciales de usuario en la memoria al iniciar sesión, lo que permite que los usuarios locales obtengan información sensible volcando la memoria de la aplicación AvastUI.exe y analizando los datos. Avast Anti-Virus versions prior to 19.1.2360 suffer from a local credential disclosure vulnerability. • http://packetstormsecurity.com/files/151590/Avast-Anti-Virus-Local-Credential-Disclosure.html • CWE-312: Cleartext Storage of Sensitive Information •