Vulnerability · Published Jul 8, 2021 · Assigned by cisco

CVE-2021-1359Cisco Web Security Appliance Privilege Escalation Vulnerability

Medium 6.3

In plain English

A medium-severity security flaw in Cisco Web Security Appliance (WSA) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)1.9%top 20.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the configuration management of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to perform command injection and elevate privileges to root. This vulnerability is due to insufficient validation of user-supplied XML input for the web interface. An attacker could exploit this vulnerability by uploading crafted XML configuration files that contain scripting code to a vulnerable device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root. An attacker would need a valid user account with the rights to upload configuration files to exploit this vulnerability.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Web Security Appliance (WSA)	n/a

Weakness: CWE-112 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

20210707 Cisco Web Security Appliance Privilege Escalation Vulnerability vendor-advisory, x_refsource_CISCO