CVE-2021-20839 — MEDIUM (6.5)

Q: How severe is CVE-2021-20839?

CVE-2021-20839 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-20839?

Check the references section above for vendor advisories and patch information. Affected products include: Antennahouse Office Server Document Converter.

Vulnerability Description

Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS) condition to the other servers by processing a specially crafted XML document.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Antennahouse	Office Server Document Converter	< 5.2

Related Weaknesses (CWE)

CWE-611

References

https://jvn.jp/en/jp/JVN33453839/index.htmlThird Party Advisory
https://www.antenna.co.jp/news/2021/osdc72-20211027.htmlPatchVendor Advisory
https://jvn.jp/en/jp/JVN33453839/index.htmlThird Party Advisory
https://www.antenna.co.jp/news/2021/osdc72-20211027.htmlPatchVendor Advisory

FAQ

What is CVE-2021-20839?

CVE-2021-20839 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS) ...

How severe is CVE-2021-20839?

CVE-2021-20839 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20839?

Check the references section above for vendor advisories and patch information. Affected products include: Antennahouse Office Server Document Converter.