Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-22140 |
CWE-ID | CWE-611 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
App Search web crawler Client/Desktop applications / Other client software |
Vendor | Elastic Stack |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU52692
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-22140
CWE-ID:
CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied XML input in Enterprise Search. A remote attacker whose website is being crawled by App Search can craft a malicious sitemap.xml to traverse the filesystem of the host running the instance and obtain sensitive files.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApp Search web crawler: before 7.12.1
CPE2.3 External linkshttp://www.elastic.co/community/security#ESA-2021-11
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.