CyberSecBulletin
CVE-2024-23486NVD status: Analyzed

WSR-2533DHP: Plaintext Storage of a Password

Published Updated By the CyberSecBulletin desk

CVE-2024-23486 is a critical-severity plaintext storage of a password vulnerability in WSR-2533DHP from Buffalo, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected WSR-2533DHP versions: firmware Ver. 1.06 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 0.56% chance of exploitation within 30 days, which is low compared with other CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Update WSR-2533DHPL to 1.06 or a later version.
  2. Update WSR-2533DHP2 to 1.06 or a later version.
  3. Update a2533dhp2 to 1.06 or 1,06, whichever matches your release line, or a later version.
  4. Read the advisory on buffalo.jp for workarounds and exact fixed builds.
  5. 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
BUFFALOWSR-2533DHPfirmware Ver. 1.06 and earlierNot stated
BUFFALOWSR-2533DHPLfirmware Ver. 1.06 and earlier; before 1.061.06
BUFFALOWSR-2533DHP2firmware Ver. 1.10 and earlier; before 1.061.06
BUFFALOWSR-A2533DHP2firmware Ver. 1.10 and earlierNot stated
Buffalo Inca2533dhp2before 1.06; before 1,061.06, 1,06
BuffaloWsr-2533dhp Firmwarebefore 1.071.07
BuffaloWsr-2533dhpl Firmwarebefore 1.071.07
BuffaloWsr-2533dhp2 Firmwarebefore 1.111.11
BuffaloWsr-a2533dhp2 Firmwarebefore 1.111.11

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
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).

Official description

Plaintext storage of a password issue exists in BUFFALO wireless LAN routers, which may allow a network-adjacent unauthenticated attacker with access to the product's login page may obtain configured credentials.

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

The underlying weakness: Plaintext Storage of a Password

The product stores a password in plaintext within resources such as memory or files.

How developers prevent this class of flaw

  • Avoid storing passwords in easily accessible locations.
  • Consider storing cryptographic hashes of passwords as an alternative to storing in plaintext.
  • A programmer might attempt to remedy the password management problem by obscuring the password with an encoding function, such as base 64 encoding, but this effort does not adequately protect the password because the encoding can be detected and decoded easily.

More Plaintext Storage of a Password vulnerabilities (CWE-256)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Other vulnerabilities in WSR-2533DHP

All WSR-2533DHP vulnerabilities

Recent Plaintext Storage of a Password vulnerabilities

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