TIBCO Managed File Transfer Command Center: Improper Restriction of XML External Entity Reference
CVE-2022-22774 is a critical-severity improper restriction of XML external entity reference vulnerability in TIBCO Managed File Transfer Command Center from TIBCO Software, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected TIBCO Managed File Transfer Command Center versions: 8.3.1 and earlier; 8.4.0; 8.4.1. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.91% chance of exploitation within 30 days, higher than 61% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Managed File Transfer Command Center to 8.3.2 or 8.4.2, whichever matches your release line, or a later version.
- Update Managed File Transfer Internet Server to 8.3.2 or 8.4.2, whichever matches your release line, or a later version.
- Read the advisory on tibco.com for workarounds and exact fixed builds.
- 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 |
|---|---|---|---|
| TIBCO Software | TIBCO Managed File Transfer Command Center | 8.3.1 and earlier; 8.4.0; 8.4.1 | Not stated |
| TIBCO Software | TIBCO Managed File Transfer Internet Server | 8.3.1 and earlier; 8.4.0; 8.4.1 | Not stated |
| TIBCO | Managed File Transfer Command Center | before 8.3.2; 8.4.0 up to, but not including, 8.4.2 | 8.3.2, 8.4.2 |
| TIBCO | Managed File Transfer Internet Server | before 8.3.2; 8.4.0 up to, but not including, 8.4.2 | 8.3.2, 8.4.2 |
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
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.6 | High | CNA (tibco.com) |
| CVSS 3.1 | 9.1 | Critical | NVD |
| CVSS 2.0 | 6.4 | Medium | NVD |
Official description
The DOM XML parser and SAX XML parser components of TIBCO Software Inc.'s TIBCO Managed File Transfer Command Center, TIBCO Managed File Transfer Command Center, TIBCO Managed File Transfer Internet Server, and TIBCO Managed File Transfer Internet Server contains an easily exploitable vulnerability that allows an unauthenticated attacker with network access to execute XML External Entity (XXE) attacks on the affected system. Affected releases are TIBCO Software Inc.'s TIBCO Managed File Transfer Command Center: versions 8.3.1 and below, TIBCO Managed File Transfer Command Center: versions 8.4.0 and 8.4.1, TIBCO Managed File Transfer Internet Server: versions 8.3.1 and below, and TIBCO Managed File Transfer Internet Server: versions 8.4.0 and 8.4.1.
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.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 9.8 Critical severity
- 7.4 High severity
- 8.8 High severity
- 7.5 High severity
- 9.1 Critical severity
- 9.1 Critical severity
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