This security advisory describes one medium risk vulnerability.
1) Buffer overflow
Risk: Medium
CVSSv3.1: 7.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C] [PCI]
CVE-ID: CVE-2021-34481
CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: No
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when the Windows Print Spooler service improperly performs privileged file operations. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system with SYSTEM privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
Windows: 8.1, 10, 10 20H2, 10 21H1, 10 1507, 10 1511, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, 10 2004, 10 Gold, 10 Mobile, 10 S, RT 8.1
Windows Server: 2012, 2012 R2, 2016, 2019, 2019 20H2, 2019 1709, 2019 1803, 2019 1903, 2019 1909, 2019 2004
CPE
External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34481
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known ..
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