lte-pic32-writer: Insertion of Sensitive Information into Externally-Accessible File or Directory
CVE-2023-46723 is a high-severity insertion of sensitive information into externally-accessible file or directory vulnerability in lte-pic32-writer from Paijp, 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 lte-pic32-writer versions: <= 0.0.1. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.48% 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 lte-pic32-writer you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on github.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 |
|---|---|---|---|
| Paijp | lte-pic32-writer | <= 0.0.1 | 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.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.9 | High | CNA (github.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
lte-pic32-writer is a writer for PIC32 devices. In versions 0.0.1 and prior, those who use `sendto.txt` are vulnerable to attackers who known the IMEI reading the sendto.txt. The sendto.txt file can contain the SNS(such as slack and zulip) URL and API key. As of time of publication, a patch is not yet available. As workarounds, avoid using `sendto.txt` or use `.htaccess` to block access to `sendto.txt`.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insertion of Sensitive Information into Externally-Accessible File or Directory
The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.
How developers prevent this class of flaw
- Do not expose file and directory information to the user.
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
Spotted an error? Tell us.