#VU101723 XML External Entity injection in classgraph - CVE-2021-47621
Vulnerability identifier: #VU101723
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-611
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
classgraph
Other software /
Other software solutions
Vendor: classgraph
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
classgraph: before 4.8.112
External links
https://github.com/classgraph/classgraph/releases/tag/classgraph-4.8.112
https://github.com/classgraph/classgraph/commit/681362ad6b0b9d9abaffb2e07099ce54d7a41fa3
https://github.com/classgraph/classgraph/pull/539
https://docs.r3.com/en/platform/corda/4.8/enterprise/release-notes-enterprise.html
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.
