SB2020081124 - Privilege escalation in Windows Backup Engine
Published: August 11, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2020-1543)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
2) Buffer overflow (CVE-ID: CVE-2020-1544)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
3) Buffer overflow (CVE-ID: CVE-2020-1545)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Buffer overflow (CVE-ID: CVE-2020-1547)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
5) Buffer overflow (CVE-ID: CVE-2020-1542)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
6) Buffer overflow (CVE-ID: CVE-2020-1534)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Service improperly handles file operations. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Buffer overflow (CVE-ID: CVE-2020-1535)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
8) Buffer overflow (CVE-ID: CVE-2020-1536)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
9) Buffer overflow (CVE-ID: CVE-2020-1539)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
10) Buffer overflow (CVE-ID: CVE-2020-1540)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
11) Buffer overflow (CVE-ID: CVE-2020-1541)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
12) Buffer overflow (CVE-ID: CVE-2020-1551)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Backup Engine improperly handles memory. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1543
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1544
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1545
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1547
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1542
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1534
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1535
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1536
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1539
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1540
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1541
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1551