CVE-2023-6549

critical

Description

Improper Restriction of Operations within the Bounds of a Memory Buffer in NetScaler ADC and NetScaler Gateway allows Unauthenticated Denial of Service and Out-Of-Bounds Memory Read

From the Tenable Blog

CVE-2023-6548, CVE-2023-6549: Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC and NetScaler Gateway

CVE-2023-6548, CVE-2023-6549: Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC and NetScaler Gateway

Published: 2024-01-16

Two zero-day vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway have been exploited in the wild. Urgent patching is required to address these flaws.

References

https://www.tenable.com/blog/cve-2023-6548-cve-2023-6549-zero-day-vulnerabilities-netscaler-adc-gateway-exploited

https://www.bleepingcomputer.com/news/security/citrix-warns-of-new-netscaler-zero-days-exploited-in-attacks/

https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549

Details

Source: Mitre, NVD

Published: 2024-01-17

Updated: 2024-06-10

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 9.2

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Severity: Critical