Aruba Mobility Conductor (formerly Mobility…: Improper Neutralization of Formula Elements in a CSV File
CVE-2022-37905 is a high-severity improper neutralization of formula elements in a CSV file vulnerability in Aruba Mobility Conductor (formerly Mobility Master); Aruba Mobility Controllers; WLAN Gateways and SD-WAN Gateways managed by Aruba Central from Hewlett Packard Enterprise, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.96% chance of exploitation within 30 days, higher than 62% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Sd-wan to 8.7.0.0-2.3.0.7 or a later version.
- Update Arubaos to 6.5.4.23 or 8.6.0.18 or 8.7.1.10 or 8.10.0.0, whichever matches your release line, or a later version.
- Read the advisory on arubanetworks.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hewlett Packard Enterprise | Aruba Mobility Conductor (formerly Mobility Master); Aruba Mobility Controllers; WLAN Gateways and SD-WAN Gateways managed by Aruba Central | Not specified in the record | Not stated |
| Aruba Networks | Sd-wan | 8.5.0.0-2.1.0.0 up to, but not including, 8.7.0.0-2.3.0.7 | 8.7.0.0-2.3.0.7 |
| Aruba Networks | Arubaos | 6.5.4.0 up to, but not including, 6.5.4.23; 8.4.0.0 up to, but not including, 8.6.0.18; 8.7.0.0 up to, but not including, 8.7.1.10; 8.8.0.0 up to, but not including, 8.10.0.0; 10.3.0.0 | 6.5.4.23, 8.6.0.18, 8.7.1.10, 8.10.0.0 |
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
- 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:N/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 | 6.6 | Medium | CNA (hpe.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
Vulnerabilities in ArubaOS running on 7xxx series controllers exist that allows an attacker to execute arbitrary code during the boot sequence. Successful exploitation could allow an attacker to achieve permanent modification of the underlying operating system.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Formula Elements in a CSV File
The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.
How developers prevent this class of flaw
- When generating CSV output, ensure that formula-sensitive metacharacters are effectively escaped or removed from all data before storage in the resultant CSV. Risky characters include '=' (equal), '+' (plus), '-' (minus), and '@' (at).
- If a field starts with a formula character, prepend it with a ' (single apostrophe), which prevents Excel from executing the formula.
- Certain implementations of spreadsheet software might disallow formulas from executing if the file is untrusted, or if the file is not authored by the current user.
More Improper Neutralization of Formula Elements in a CSV File vulnerabilities (CWE-1236)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Aruba Mobility Conductor (formerly Mobility Master); Aruba Mobility Controllers; WLAN Gateways and SD-WAN Gateways managed by Aruba Central
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Improper Neutralization of Formula Elements in a CSV File vulnerabilities
- 7.8 High severity
- 8.0 High severity
- 7.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.8 High severity
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