CVE-2020-20118 — MEDIUM (5.5)

Q: What is CVE-2020-20118?

CVE-2020-20118 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

Q: How severe is CVE-2020-20118?

CVE-2020-20118 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-20118?

Check the references section above for vendor advisories and patch information. Affected products include: Avast Antivirus.

Vulnerability Description

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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Avast	Antivirus	< 19.7

Related Weaknesses (CWE)

CWE-120

References

http://avast.comVendor Advisory
https://gitlab.com/yongchuank/avast-aswsnx-ioctl-82ac0060-oob-writePatchThird Party Advisory
http://avast.comVendor Advisory
https://gitlab.com/yongchuank/avast-aswsnx-ioctl-82ac0060-oob-writePatchThird Party Advisory

FAQ

What is CVE-2020-20118?

CVE-2020-20118 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

How severe is CVE-2020-20118?

CVE-2020-20118 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-20118?

Check the references section above for vendor advisories and patch information. Affected products include: Avast Antivirus.