Cash Point & Transport Optimizer: Improper Neutralization of Formula Elements in a CSV File
CVE-2023-31294 is a high-severity improper neutralization of formula elements in a CSV file vulnerability in Cash Point & Transport Optimizer from Sesami, 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 Cash Point & Transport Optimizer versions: 6.3.8.6.718. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.58% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Cash Point & Transport Optimizer you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on herolab.usd.de 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 |
|---|---|---|---|
| Sesami | Cash Point & Transport Optimizer | 6.3.8.6.718 | Not stated |
Version data comes from NVD's product matching. 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
CSV Injection vulnerability in Sesami Cash Point & Transport Optimizer (CPTO) version 6.3.8.6 (#718), allows remote attackers to obtain sensitive information via the Delivery Name field.
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.
- Record last changed materially (score, affected products, status or references).
References
Advisories
- herolab.usd.de/en/security-advisories/usd-2022-0052/Third Party Advisory
Other vulnerabilities in Cash Point & Transport Optimizer
- 7.5 High severity
- 7.5 High severity
Recent Improper Neutralization of Formula Elements in a CSV File vulnerabilities
- 8.8 High severity
- 8.0 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
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