Vulnerability · Published Sep 30, 2020 · Assigned by mitre

CVE-2020-21524

Critical 9.1

In plain English

A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS NVD)9.1Critical

Exploit odds (30 days)1.5%top 25.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

There is a XML external entity (XXE) vulnerability in halo v1.1.3, The function of importing other blogs in the background(/api/admin/migrations/wordpress) needs to parse the xml file, but it is not used for security defense, This vulnerability can detect the intranet, read files, enable ddos attacks, etc. exp:https://github.com/halo-dev/halo/issues/423

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/halo-dev/halo/issues/423 x_refsource_MISC