CyberSecBulletin
CVE-2024-51982NVD status: Deferred

HL-L8260CDN: Improper Validation of Syntactic Correctness of Input

Published Updated By the CyberSecBulletin desk

CVE-2024-51982 is a high-severity improper validation of syntactic correctness of input vulnerability in HL-L8260CDN from Brother Industries, 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 HL-L8260CDN versions: 1.65(ZH) and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 10.7% chance of exploitation within 30 days, which is in the top 4.1% of all scored CVEs.

Patch this week

EPSS places it among the vulnerabilities most likely to be exploited soon.

What to do

  1. Check which version of HL-L8260CDN you run against the affected versions below, and install the vendor's latest release.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
Brother IndustriesHL-L8260CDN1.65(ZH) and earlierNot stated
Brother IndustriesHL-L8260CDW1.65(ZH) and earlierNot stated
Brother IndustriesHL-L8360CDW1.68(ZG) and earlierNot stated
Brother IndustriesHL-L8360CDWT1.68(ZG) and earlierNot stated
Brother IndustriesHL-L9310CDW1.68(ZG) and earlierNot stated
Brother IndustriesDCP-L8410CDWZK and earlierNot stated
Brother IndustriesMFC-L8610CDWZK and earlierNot stated
Brother IndustriesMFC-L8690CDWZK and earlierNot stated
Brother IndustriesMFC-L8900CDWZM and earlierNot stated
Brother IndustriesMFC-L9570CDWZM and earlierNot stated
Brother IndustriesMFC-L9577CDWZM and earlierNot stated
Brother IndustriesHL-L2325DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2350DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2351DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2352DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2357DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2370DN1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2371DN1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2372DN1.74(ZE) and earlierNot stated
Brother IndustriesHL-2590DN1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2370DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2370DWXL1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2375DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-L2376DW1.74(ZE) and earlierNot stated
Brother IndustriesHL-B2050DN1.74(ZE) and earlierNot 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 CNA (rapid7.com).

Official description

An unauthenticated attacker who can connect to TCP port 9100 can issue a Printer Job Language (PJL) command that will crash the target device. The device will reboot, after which the attacker can reissue the command to repeatedly crash the device. A malformed PJL variable FORMLINES is set to a non number value causing the target to crash.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Validation of Syntactic Correctness of Input

The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.

More Improper Validation of Syntactic Correctness of Input vulnerabilities (CWE-1286)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in HL-L8260CDN

All HL-L8260CDN vulnerabilities

Recent Improper Validation of Syntactic Correctness of Input vulnerabilities

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