What is CVE-2018-0878?

CVE-2018-0878 is a low-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.1/10. Published 2018-03-14.

How severe is CVE-2018-0878?

Low severity. CVSS v3 base score is 3.1 out of 10.

Is CVE-2018-0878 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XXE in Microsoft Windows 10

CVE-2018-0878

Windows Remote Assistance in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016 and Windows Server, version 1709 allows an information disclosure vulnerability due to how XML External Entities (XXE) are processed, aka "Windows Remote Assistance Information Disclosure Vulnerability".

Vulnerability class: XXE (XML External Entity)

EPSS: 0.215 (97.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Microsoft Windows_10 — versions 1511, 1607, 1703
Microsoft Windows_7
Microsoft Windows_8.1
Microsoft Windows_rt_8.1
Microsoft Windows_server_2008 — versions r2
Microsoft Windows_server_2012 — versions r2
Microsoft Windows_server_2016 — versions 1709
Microsoft Corporation Windows Remote Assistance — versions Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016 and Windows Server, version 1709

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

Public proof-of-concept exploits

References

secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
secure@microsoft.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
secure@microsoft.com (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-0878?: CVE-2018-0878 is a low-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.1/10. Published 2018-03-14.
How severe is CVE-2018-0878?: Low severity. CVSS v3 base score is 3.1 out of 10.
Is CVE-2018-0878 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.