Acronis Cyber Protect Cloud Agent: Externally Controlled Reference to a Resource in Another Sphere
CVE-2023-44209 is a high-severity externally controlled reference to a resource in another sphere vulnerability in Acronis Cyber Protect Cloud Agent from Acronis, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 29051 as the first without the flaw, so updating Acronis Cyber Protect Cloud Agent to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.36% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Acronis Cyber Protect Cloud Agent to 29051 or a later version.
- Update Acronis Cyber Protect 17 to 41186 or a later version.
- Read the advisory on security-advisory.acronis.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Acronis | Acronis Cyber Protect Cloud Agent | before 29051 | 29051 |
| Acronis | Acronis Cyber Protect 17 | before 41186 | 41186 |
| Acronis | Agent | c22.02 | 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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- 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
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 3.0 | 5.6 | Medium | CNA (acronis.com) |
Official description
Local privilege escalation due to improper soft link handling. The following products are affected: Acronis Cyber Protect Cloud Agent (Linux, macOS, Windows) before build 29051, Acronis Cyber Protect 17 (Linux, macOS, Windows) before build 41186.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Externally Controlled Reference to a Resource in Another Sphere
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.
More Externally Controlled Reference to a Resource in Another Sphere vulnerabilities (CWE-610)
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
Other vulnerabilities in Acronis Cyber Protect Cloud Agent
- 7.1 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.1 High severity
- 7.3 High severity
Recent Externally Controlled Reference to a Resource in Another Sphere vulnerabilities
- 8.1 High severity
- 7.8 High severity
- 7.5 High severity
- 7.8 High severity
- 9.8 Critical severity
- 7.8 High severity
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