XML External Entity Injection in Elastic App Search by Elastic
CVE-2021-22140

7.5HIGH

Key Information:

Vendor

Elastic
Status
Elastic App Search
Vendor
CVE Published:
13 May 2021

What is CVE-2021-22140?

Elastic App Search contains a vulnerability in the web crawler beta feature that allows for an XML External Entity Injection (XXE). An attacker can leverage this flaw by crafting a malicious sitemap.xml while their website is being crawled. This may allow the attacker to traverse the filesystem of the host running the instance of App Search, potentially exposing sensitive files and data.

Affected Version(s)

Elastic App Search after 7.11.0 and before 7.12.0

References

https://discuss.elastic.co/t/7-12-1-security-update/271433
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.