Denial of service in Sysmon



Published: 2018-12-18
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Sysinternals Sysmon
Client/Desktop applications / Software for system administration

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Memory leak

EUVDB-ID: #VU17211

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition.

The weakness exists due to Sysmon's driver (SysmonDrv.sys) consumes new area in Nonpaged pool memory every time configuration reloads, but driver does not free old area in Nonpaged pool memory. A remote attacker can trigger memory leak and cause the service to crash.

Mitigation

Update to versions 8.04.

Vulnerable software versions

Sysinternals Sysmon: 7.01 - 8.02

External links

http://social.technet.microsoft.com/Forums/en-US/b842c651-b617-4ba6-a799-1e199868730b/sysmon-memory...


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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