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CVE-2021-36172

HIGHCVSS 8.1/10EPSS 0.80%

Last modified

CVE-2021-36172 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.

Metrics

CVSS 3.1
8.1/10

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

EPSS Probability
0.80%

51.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FortinetFortiportal>= 4.0.0, <= 4.0.4
FortinetFortiportal>= 4.1.0, <= 4.1.2
FortinetFortiportal>= 4.2.0, <= 4.2.4
FortinetFortiportal>= 5.0.0, <= 5.0.3
FortinetFortiportal>= 5.1.0, <= 5.1.2
FortinetFortiportal>= 5.2.0, <= 5.2.6
FortinetFortiportal>= 5.3.0, < 5.3.7
FortinetFortiportal>= 6.0.0, < 6.0.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-36172?
An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.
How severe is CVE-2021-36172?
CVE-2021-36172 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36172?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36172?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST