What is CVE-2020-6018?

CVE-2020-6018 is a critical-severity vulnerability in Valvesoftware Game_networking_sockets, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-12-02.

How severe is CVE-2020-6018?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Valvesoftware Game_networking_sockets

CVE-2020-6018

Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long encrypted messages in function AES_GCM_DecryptContext::Decrypt() when compiled using libsodium, leading to a Stack-Based Buffer Overflow and resulting in a mem…

Vulnerability class: Buffer Overflow

EPSS: 0.031 (86.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Valvesoftware Game_networking_sockets
N/a Game Networking Sockets — versions All versions prior to v1.2.0

Weakness classification (CWE)

References

cve@checkpoint.com (Patch, Third Party Advisory, x_refsource_MISC)
cve@checkpoint.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-6018?: CVE-2020-6018 is a critical-severity vulnerability in Valvesoftware Game_networking_sockets, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-12-02.
How severe is CVE-2020-6018?: Critical severity. CVSS v3 base score is 9.8 out of 10.