Artica Proxy: Relative Path Traversal
CVE-2024-2053 is a high-severity relative path traversal vulnerability in Artica Proxy from Artica Tech, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Artica Proxy versions: 4.50; 4.40. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 44.6% chance of exploitation within 30 days, which is in the top 1.21% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Check which version of Artica Proxy you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Artica Tech | Artica Proxy | 4.50; 4.40 | Not stated |
| Articatech | artica_proxy | 4.50; 4.40 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by CISA (ADP).
Official description
The Artica Proxy administrative web application will deserialize arbitrary PHP objects supplied by unauthenticated users and subsequently enable code execution as the "www-data" user. This issue was demonstrated on version 4.50 of the The Artica-Proxy administrative web application attempts to prevent local file inclusion. These protections can be bypassed and arbitrary file requests supplied by unauthenticated users will be returned according to the privileges of the "www-data" user.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Relative Path Traversal
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as.. that can resolve to a location that is outside of that directory.
How developers prevent this class of flaw
- Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- seclists.org/fulldisclosure/2024/Mar/11Exploit, Mailing List
- korelogic.com/Resources/Advisories/KL-001-2024-001.txtExploit, Third Party Advisory
Other vulnerabilities in Artica Proxy
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Relative Path Traversal vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
- 7.1 High severity
- 7.2 High severity
- 7.2 High severity
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