Horizon Alert
Summary of the vulnerability and why it matters
Microsoft Skype for Business Server contains a vulnerability that could allow an attacker to gain elevated privileges. This flaw is present in the server's handling of specific requests. Successful exploitation could potentially lead to unauthorized access or modification of sensitive information or system functions.
- Vulnerable Skype for Business Server
- Unspecified request handling flaw
- Potential for privilege escalation
Attack Path
How an attacker could exploit the issue
A network-accessible vulnerability in Skype for Business Server could allow an unauthenticated attacker to escalate privileges. This could potentially lead to unauthorized access and control over affected systems. The attack leverages an insecure direct object reference to gain elevated permissions.
- External network access required.
- Attacker exploits a server-side request forgery.
- Results in privilege escalation.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Skype for Business could allow an attacker to elevate their privileges on affected systems. The attack vector is network-based, meaning an attacker can exploit this remotely without needing prior access to the organization's internal network. Successful exploitation could lead to unauthorized access and potential disruption of services.
- Attackers with low skill.
- Network access required.
- Business risk is medium.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in Microsoft Skype for Business Server could allow an attacker to elevate privileges. The exploitability is rated as network-accessible, meaning an attacker could potentially trigger it remotely. Organizations using this software should prioritize addressing this risk to maintain system integrity and prevent unauthorized access.
- Find affected Skype for Business assets.
- Reduce exposure or isolate risk.
- Apply vendor fix, verify, and monitor.
