Multiple MFPs (multifunction printers): Out-of-bounds Read
CVE-2024-36251 is a high-severity out-of-bounds read vulnerability in Multiple MFPs (multifunction printers) from Sharp, 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. There is no confirmed exploitation so far. EPSS estimates a 3.5% chance of exploitation within 30 days, higher than 89% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Multiple MFPs (multifunction printers) 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 |
|---|---|---|---|
| Sharp | Multiple MFPs (multifunction printers) | Not specified in the record | Not stated |
| Toshiba Tec | Multiple MFPs (multifunction printers) | Not specified in the record | Not stated |
| Sharp | mx-m905 | 611 | Not stated |
| Sharp | mx-m6070 | 502 | Not stated |
| Sharp | mx-m5070 | 502 | Not stated |
| Sharp | mx-m4070 | 502 | Not stated |
| Sharp | mx-m3570 | 502 | Not stated |
| Sharp | mx-m3070 | 502 | Not stated |
| Sharp | mx-m6050 | 502 | Not stated |
| Sharp | mx-m5050 | 502 | Not stated |
| Sharp | mx-m4050 | 502 | Not stated |
| Sharp | mx-m3550 | 502 | Not stated |
| Sharp | mx-m3050 | 502 | Not stated |
| Sharp | mx-m2630 | 502 | Not stated |
| Sharp | bp-b550wd | 250 | Not stated |
| Sharp | bp-b540wr | 250 | Not stated |
| Sharp | bp-b547wd | 250 | Not stated |
| Sharp | bp-b537wr | 250 | Not stated |
| Sharp | mx-b455w | 404 | Not stated |
| Sharp | mx-b355w | 404 | Not stated |
| Sharp | mx-b455wz | 404 | Not stated |
| Sharp | mx-b355wz | 404 | Not stated |
| Sharp | mx-b455wt | 404 | Not stated |
| Sharp | mx-b355wt | 404 | 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
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CNA (jpcert.or.jp).
Official description
The web interface of the affected devices process some crafted HTTP requests improperly, leading to a device crash. More precisely, a crafted parameter to billcodedef_sub_sel.html is not processed properly and device-crash happens. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
- global.sharp/products/copier/info/info_security_2024-05.html
- jp.sharp/business/print/information/info_security_2024-05.html
- jvn.jp/en/vu/JVNVU93051062/
- pierrekim.github.io/blog/2024-06-27-sharp-mfp-17-vulnerabilities.html
- toshibatec.co.jp/information/20240531_02.html
- toshibatec.com/information/20240531_02.html
- seclists.org/fulldisclosure/2024/Jul/0
Other vulnerabilities in Multiple MFPs (multifunction printers)
- 7.5 High severity
- 7.4 High severity
- 9.1 Critical severity
- 9.1 Critical severity
- 9.1 Critical severity
- 7.5 High severity
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 7.1 High severity
- 9.8 Critical severity
- 7.8 High severity
- 7.1 High severity
- 7.1 High severity
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