Ivanti Endpoint Manager Mobile (EPMM) Path Traversal
CVE-2023-35081 is a high-severity improper limitation of a pathname to a restricted directory vulnerability in EPMM from Ivanti, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. The record lists version 11.10.0.3 as the first without the flaw, so updating EPMM to that release or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on July 31, 2023, which means attacks have been observed in the wild.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Update EPMM to 11.10.0.3 or a later version.
- Update Endpoint Manager Mobile to 11.8.1.2 or 11.9.1.2 or 11.10.0.3, whichever matches your release line, or a later version.
- CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Read the advisory on forums.ivanti.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Ivanti | EPMM | 11.10.0.3 up to, but not including, 11.10.0.3 | 11.10.0.3 |
| Ivanti | Endpoint Manager Mobile | 11.8.0 up to, but not including, 11.8.1.2; 11.9.0 up to, but not including, 11.9.1.2; 11.10.0 up to, but not including, 11.10.0.3 | 11.8.1.2, 11.9.1.2, 11.10.0.3 |
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
- HighAdministrator-level access is required first.
- 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:H/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.2 | High | NVD |
| CVSS 3.0 | 7.2 | High | CNA (hackerone.com) |
Official description
A path traversal vulnerability in Ivanti EPMM versions (11.10.x < 11.10.0.3, 11.9.x < 11.9.1.2 and 11.8.x < 11.8.1.2) allows an authenticated administrator to write arbitrary files onto the appliance.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Limitation of a Pathname to a Restricted Directory
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
How developers prevent this class of flaw
- For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.
More Improper Limitation of a Pathname to a Restricted Directory vulnerabilities (CWE-22)
Timeline
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- CVE record published.
- Deadline for US federal agencies to remediate, set by CISA.
- CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35081US Government Resource
Other vulnerabilities in EPMM
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.1 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Improper Limitation of a Pathname to a Restricted Directory vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
ZKTeco BioTime Path Traversal Exploited
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.1 Critical severity
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