CVE-2020-1268: Windows Service Information Disclosure Vulnerability
CVE-2020-1268 is an information disclosure vulnerability in Windows Service, rated Important by Microsoft, with a CVSS 3.0 base score of 5.5 (Medium). An attacker can exploit it by an attacker with local access, with low privileges and without user interaction. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. The EPSS model estimates a 1.30% probability of exploitation activity in the next 30 days, higher than 70% of all scored vulnerabilities. Microsoft released the fix on 9 June 2020 in the June 2020 Patch Tuesday, delivered through 2 security updates (KB4560960, KB4557957). It affects 12 products in 1 product family (Windows).
Key facts
- CVE ID
- CVE-2020-1268
- Severity
- Medium CVSS 5.5
- Microsoft severity
- Important
- Impact
- Information Disclosure
- Exploited in the wild
- No
- Publicly disclosed
- No
- Exploitation likelihood
- Less Likely
- EPSS
- 1.30% (percentile 70%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- June 2020 Patch Tuesday
- Product families
- Windows
CVSS score and vector
Microsoft scores CVE-2020-1268 at 5.5 (temporal 5) using CVSS 3.0. Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality impact | High |
| Integrity impact | None |
| Availability impact | None |
| Exploit code maturity | Proof of concept |
| Remediation level | Official fix |
| Report confidence | Confirmed |
NVD scores it 5.5 (MEDIUM) with CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Description
An information disclosure vulnerability exists when a Windows service improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system.
To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to execute code or to elevate user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system.
The update addresses the vulnerability by correcting how a Windows service handles objects in memory.
Frequently asked questions (Microsoft)
What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.
Affected products (12)
Windows
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Windows 10 Version 1909 for 32-bit Systems | KB4560960 | Security Update | Yes | |
| Windows 10 Version 1909 for x64-based Systems | KB4560960 | Security Update | Yes | |
| Windows 10 Version 1909 for ARM64-based Systems | KB4560960 | Security Update | Yes | |
| Windows Server, version 1909 (Server Core installation) | KB4560960 | Security Update | Yes | |
| Windows 10 Version 1903 for 32-bit Systems | KB4560960 | Security Update | Yes | |
| Windows 10 Version 1903 for x64-based Systems | KB4560960 | Security Update | Yes | |
| Windows 10 Version 1903 for ARM64-based Systems | KB4560960 | Security Update | Yes | |
| Windows Server, version 1903 (Server Core installation) | KB4560960 | Security Update | Yes | |
| Windows 10 Version 2004 for 32-bit Systems | KB4557957 | Security Update | Yes | |
| Windows 10 Version 2004 for ARM64-based Systems | KB4557957 | Security Update | Yes | |
| Windows 10 Version 2004 for x64-based Systems | KB4557957 | Security Update | Yes | |
| Windows Server, version 2004 (Server Core installation) | KB4557957 | Security Update | Yes |
Security updates (2)
NIST NVD data
- NVD status
- Modified
- NVD CVSS
- 5.5 (MEDIUM)
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| windows 10 1903 | all listed versions |
| windows 10 1909 | all listed versions |
| windows 10 2004 | all listed versions |
| windows server 2016 1903 | all listed versions |
| windows server 2016 1909 | all listed versions |
| windows server 2016 2004 | all listed versions |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1268 (Patch, Vendor Advisory)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1268 (Patch, Vendor Advisory)
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |