Sharp Digital Full-color MFPs and Monochrome…: Out-of-bounds Read
CVE-2024-43424 is a high-severity out-of-bounds read vulnerability in Sharp Digital Full-color MFPs and Monochrome MFPs 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. Affected Sharp Digital Full-color MFPs and Monochrome MFPs versions: see the information provided by Sharp Corporation. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.75% chance of exploitation within 30 days, higher than 56% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Sharp Digital Full-color MFPs and Monochrome MFPs you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on global.sharp 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 |
|---|---|---|---|
| Sharp | Sharp Digital Full-color MFPs and Monochrome MFPs | see the information provided by Sharp Corporation | Not stated |
| Toshiba Tec | e-STUDIO 908 | T2.12.h3.00 and earlier versions | Not stated |
| Toshiba Tec | e-STUDIO 1058 | T1.01.h4.00 and earlier versions | Not stated |
| Toshiba Tec | e-STUDIO 1208 | T1.01.h4.00 and earlier versions | Not stated |
| Sharp | bp-90c80_firmware | 210 and earlier | Not stated |
| Sharp | bp-70c65_firmware | 320 and earlier | Not stated |
| Sharp | mx-8081_firmware | 160 and earlier | Not stated |
| Sharp | mx-6071s_firmware | 613 and earlier | Not stated |
| Sharp | bp-30c25_firmware | 130 and earlier | Not stated |
| Sharp | mx-7580n_firmware | 503 and earlier | Not stated |
| Sharp | mx-8090n_firmware | 405 and earlier | Not stated |
| Sharp | mx-6070v_firmware | 802 and earlier | Not stated |
| Sharp | bp-c545wd_firmware | 262 and earlier | Not stated |
| Sharp | mx-c304wh_firmware | 520 and earlier | Not stated |
| Sharp | bp-70m90_firmware | 310 and earlier | Not stated |
| Sharp | bp-70m65_firmware | 320 and earlier | Not stated |
| Sharp | mx-m1206_firmware | 200 and earlier | Not stated |
| Sharp | mx-m7570_firmware | 456 and earlier | Not stated |
| Sharp | mx-m6071s_firmware | 413 and earlier | Not stated |
| Sharp | bp-30m35t_firmware | 220 and earlier | Not stated |
| Sharp | mx-b476wh_firmware | 413 and earlier | Not stated |
| Sharp | mx-m905_firmware | 612 and earlier | Not stated |
| Sharp | mx-m6070_firmware | 503 and earlier | Not stated |
| Sharp | bp-b550wd_firmware | 260 and earlier | Not stated |
| Sharp | mx-b455wz_firmware | 404 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE; 35 further products are omitted here. 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 NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (jpcert.or.jp) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
Sharp and Toshiba Tec MFPs improperly process HTTP request headers, resulting in an Out-of-bounds Read vulnerability. Crafted HTTP requests may cause affected products crashed.
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: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Third-party and government advisories
- jvn.jp/en/vu/JVNVU95063136/Third Party Advisory
Other vulnerabilities in Sharp Digital Full-color MFPs and Monochrome MFPs
- 8.1 High severity
- 7.5 High severity
- 7.5 High severity
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 7.8 High severity
- 7.5 High severity
- 8.2 High severity
- 7.1 High severity
- 7.1 High severity
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