CVE-2019-0948mediumobserved exploitation

Windows Event Viewer Information Disclosure Vulnerability

60Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.

ssvc Actcvss 4.7epss 13%

from disclosure to weapon0 days

Published on NVDJun 12

1st PoCDec 5

VulnCheck+1790d

exploitation probability

13%top 4% of all CVEs

observed exploitation

yesVulnCheck

1 public exploit(s)

An information disclosure vulnerability exists in the Windows Event Viewer (eventvwr.msc) when it improperly parses XML input containing a reference to an external entity. An attacker who successfully exploited this vulnerability could read arbitrary files via an XML external entity (XXE) declaration. To exploit the vulnerability, an attacker could create a file containing specially crafted XML content and convince an authenticated user to import the file. The update addresses the vulnerability by modifying the way that the Event Viewer parses XML input.

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

Affected products

public PoCs found — 1✓ VexDay Proof

exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/40863

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0948 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0948 https://www.zerodayinitiative.com/advisories/ZDI-19-641/