Vulnerability in Microsoft Windows
CVE-2020-15593
SteelCentral Aternity Agent 11.0.0.120 on Windows mishandles IPC. It uses an executable running as a high privileged Windows service to perform administrative tasks and collect data from other processes. It distributes functionality among different processes and uses IPC (Inter-Process Communication) primitives to enable the processes to cooperate. Any user in the system is allowed to access the interprocess communication channel AternityAgentAssistantIpc, retrieve a serialized object and call object methods remotely. Among others, the methods allow any user to: (1) Create and/or overwrite arbitrary XML files across the system; (2) Create arbitrary directories across the system; and (3) Load arbitrary plugins (i.e., C# assemblies) from the "%PROGRAMFILES(X86)/Aternity Information Systems/Assistant/plugins” directory and execute code contained in them.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Microsoft Windows
- Riverbed Steelcentral Aternity Agent — versions 11.0.0.120
References
- aternity.force.com/customersuccess/s/article/Recorder-tool-security-notificatio… (Permissions Required, Third Party Advisory)
- sec-consult.com/en/blog/advisories/privilege-escalation-vulnerability-in-steelc… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15593?
- CVE-2020-15593 is a high-severity vulnerability in Microsoft Windows. CVSS score: 7.8/10. Published 2020-07-27.
- How severe is CVE-2020-15593?
- High severity. CVSS v3 base score is 7.8 out of 10.