#VU78805 Path traversal in Apache Shiro - CVE-2023-34478

Vulnerability identifier: #VU78805

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-34478

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Shiro
Universal components / Libraries / Software for developers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and bypass authentication process, when used together with APIs or other web frameworks that route requests based on non-normalized requests.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Apache Shiro: 1.0.0 - 1.11.0

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External links
https://lists.apache.org/thread/mbv26onkgw9o35rldh7vmq11wpv2t2qk
https://www.openwall.com/lists/oss-security/2023/07/24/4

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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.