6.7med

CVE-2018-0428

A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to e…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
6.7
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 38%
Public exploits
0
none known

Summary

A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.

CISA SSVC assessment

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction (EPSS)

0.44% probability of exploitation in the next 30 days, higher than 38% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.06.7CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Cisco Systems, Inc. Web Security Appliance

Classification

Weakness

References

  • securityfocus.com /bid/105104 · vdb-entry, x_refsource_BID, x_transferred
  • securitytracker.com /id/1041536 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation · vendor-advisory, x_refsource_CISCO, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.