endpoint_manager: Improper Restriction of XML External Entity Reference
CVE-2023-38343 is a high-severity improper restriction of XML external entity reference vulnerability in endpoint_manager from Ivanti, 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 endpoint_manager versions: 2022_su4. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 2.14% chance of exploitation within 30 days, higher than 82% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of endpoint_manager 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 |
|---|---|---|---|
| Ivanti | endpoint_manager | 2022_su4 | 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 NVD.
Official description
An XXE (XML external entity injection) vulnerability exists in the CSEP component of Ivanti Endpoint Manager before 2022 SU4. External entity references are enabled in the XML parser configuration. Exploitation of this vulnerability can lead to file disclosure or Server Side Request Forgery.
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: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- ivanti.com/releasesRelease Notes
Third-party and government advisories
- gist.github.com/bhyahoo/4772330b20057a271f77e690bc70f928Third Party Advisory
Other vulnerabilities in endpoint_manager
- 9.8 Critical severity
- 8.1 High severity
- 7.7 High severity
- 7.5 High severity
- 8.8 High severity
- 7.8 High severity
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 7.4 High severity
- 8.8 High severity
- 9.1 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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