BI Publisher (formerly XML Publisher): Improper Restriction of XML External Entity Reference
CVE-2024-21082 is a critical-severity improper restriction of XML external entity reference vulnerability in BI Publisher (formerly XML Publisher) from Oracle, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected BI Publisher (formerly XML Publisher) versions: 7.0.0.0.0; 12.2.1.4.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.81% chance of exploitation within 30 days, higher than 57% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of BI Publisher (formerly XML Publisher) you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on oracle.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 |
|---|---|---|---|
| Oracle | BI Publisher (formerly XML Publisher) | 7.0.0.0.0; 12.2.1.4.0 | Not stated |
| Oracle | Bi Publisher | 7.0.0.0.0; 12.2.1.4.0 | 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
- 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:H/I:H/A:H. Scored by CNA (oracle.com).
Official description
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: XML Services). Supported versions that are affected are 7.0.0.0.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle BI Publisher. Successful attacks of this vulnerability can result in takeover of Oracle BI Publisher. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in BI Publisher (formerly XML Publisher)
- 7.2 High severity
- 8.8 High severity
- 8.8 High severity
- 7.2 High severity
Oracle BI Publisher Unauthorized Access Exploited
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 8.8 High severity
- 8.2 High severity
- 7.5 High severity
- 8.2 High severity
- 8.7 High severity
- 8.3 High severity
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