VulnerabilityModified

CVE-2021-30648

The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability.

CRITICAL 9.8EPSS 1.45%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. An unauthenticated attacker can execute arbitrary CLI commands, view/modify the appliance configuration and policy, and shutdown/restart the appliance.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.45% probability · 72th percentile
CISA KEV: Not listed
Weakness: CWE-287
Affected: broadcom/symantec proxysg · broadcom/symantec advanced secure gateway s200-30 firmware · broadcom/symantec advanced secure gateway s200-40 firmware · broadcom/symantec advanced secure gateway s400-20 firmware · broadcom/symantec advanced secure gateway s400-30 firmware · broadcom/symantec advanced secure gateway s400-40 firmware · broadcom/symantec advanced secure gateway 500-10 firmware · broadcom/symantec advanced secure gateway s500-20 firmware
Source: secure@symantec.com

References

https://support.broadcom.com/security-advisory/content/security-advisories/0/SYMSA18331Vendor Advisory
https://support.broadcom.com/security-advisory/content/security-advisories/0/SYMSA18331Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.