Delta Robot Automation Studio (DRAS): Improper Restriction of XML External Entity Reference
CVE-2022-2759 is a high-severity improper restriction of XML external entity reference vulnerability in Delta Robot Automation Studio (DRAS) from Delta Electronics, with a CVSS 3.1 base score of 8.6 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 1.13.20 as the first without the flaw, so updating Delta Robot Automation Studio (DRAS) to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.23% chance of exploitation within 30 days, higher than 69% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Delta Robot Automation Studio (DRAS) to 1.13.20 or a later version.
- Update Delta Robot Automation Studio to 1.13.20 or a later version.
- 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 |
|---|---|---|---|
| Delta Electronics | Delta Robot Automation Studio (DRAS) | All versions up to, but not including, 1.13.20 | 1.13.20 |
| Deltaww | Delta Robot Automation Studio | before 1.13.20 | 1.13.20 |
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
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- 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:C/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 5.5 | Medium | CNA (hq.dhs.gov) |
| CVSS 3.1 | 8.6 | High | NVD |
Official description
Delta Electronics Delta Robot Automation Studio (DRAS) versions prior to 1.13.20 are affected by improper restrictions where the software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. This may allow an attacker to view sensitive documents and information on the affected host.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How developers prevent this class of flaw
- Many XML parsers and validators can be configured to disable external entity expansion.
More Improper Restriction of XML External Entity Reference vulnerabilities (CWE-611)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- cisa.gov/uscert/ics/advisories/icsa-22-228-03Third Party Advisory, US Government Resource
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 7.5 High severity
- 9.1 Critical severity
- 8.2 High severity
- 9.8 Critical severity
- 9.1 Critical severity
- 7.5 High severity
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