CVSS: 7.3EPSS: 0%CPEs: 2EXPL: 0CVE-2024-5102 – Elevation of Privelage via symlinked file in Avast Antivirus
https://notcve.org/view.php?id=CVE-2024-5102
A sym-linked file accessed via the repair function in Avast Antivirus <24.2 on Windows may allow user to elevate privilege to delete arbitrary files or run processes as NT AUTHORITY\SYSTEM. The vulnerability exists within the "Repair" (settings -> troubleshooting -> repair) feature, which attempts to delete a file in the current user's AppData directory as NT AUTHORITY\SYSTEM. A low-privileged user can make a pseudo-symlink and a junction folder and point to a file on the system. This can provide a low-privileged user an Elevation of Privilege to win a race-condition which will re-create the system files and make Windows callback to a specially-crafted file which could be used to launch a privileged shell instance. This issue affects Avast Antivirus prior to 24.2. Un archivo con enlace simbólico al que se accede a través de la función de reparación en Avast Antivirus <24.2 en Windows puede permitir al usuario elevar privilegios para eliminar archivos arbitrarios o ejecutar procesos como NT AUTHORITY\SYSTEM. • https://support.norton.com/sp/static/external/tools/security-advisories.html • CWE-59: Improper Link Resolution Before File Access ('Link Following') CWE-1284: Improper Validation of Specified Quantity in Input •
CVSS: 8.2EPSS: 0%CPEs: 1EXPL: 0CVE-2023-5760 – Time-of-check to time-of-use (TOCTOU) bug leads to full local privilege escalation.
https://notcve.org/view.php?id=CVE-2023-5760
A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8. Un error de tiempo de verificación a tiempo de uso (TOCTOU) en el manejo de solicitudes IOCTL (control de entrada/salida). Este error de TOCTOU conduce a una vulnerabilidad de escritura fuera de los límites que puede explotarse aún más, permitiendo a un atacante obtener una escalada de privilegios local completa en el sistema. Este problema afecta a Avast/Avg Antivirus: 23.8. • https://support.norton.com/sp/static/external/tools/security-advisories.html • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-20118
https://notcve.org/view.php?id=CVE-2020-20118
Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver. • http://avast.com https://gitlab.com/yongchuank/avast-aswsnx-ioctl-82ac0060-oob-write • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 5.8EPSS: 0%CPEs: 3EXPL: 0CVE-2023-1587
https://notcve.org/view.php?id=CVE-2023-1587
Avast and AVG Antivirus for Windows were susceptible to a NULL pointer dereference issue via RPC-interface. The issue was fixed with Avast and AVG Antivirus version 22.11 • https://support.norton.com/sp/static/external/tools/security-advisories.html • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-1586
https://notcve.org/view.php?id=CVE-2023-1586
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the restore process leading to arbitrary file creation. The issue was fixed with Avast and AVG Antivirus version 22.11 • https://support.norton.com/sp/static/external/tools/security-advisories.html • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •