CyberSecBulletin
CVE-2023-26476NVD status: Modified

xwiki-platform: Improper Restriction of Excessive Authentication Attempts

Published Updated By the CyberSecBulletin desk

CVE-2023-26476 is a high-severity improper restriction of excessive authentication attempts vulnerability in xwiki-platform from XWiki, 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 xwiki-platform versions: >= 3.2-m3, < 13.4.4; >= 13.5.0, < 13.10.9; >= 14.0.0, < 14.7-rc-1. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 2.24% chance of exploitation within 30 days, higher than 83% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Xwiki to 13.4.4 or 13.10.9 or 14.7, whichever matches your release line, or a later version.
  2. Read the advisory on github.com for workarounds and exact fixed builds.
  3. 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
XWikixwiki-platform>= 3.2-m3, < 13.4.4; >= 13.5.0, < 13.10.9; >= 14.0.0, < 14.7-rc-1Not stated
XWikiXwiki3.3 up to, but not including, 13.4.4; 13.5.0 up to, but not including, 13.10.9; 14.0 up to, but not including, 14.7; 3.2; 14.713.4.4, 13.10.9, 14.7

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 systemScoreSeverityScored by
CVSS 3.17.5HighCNA (github.com)
CVSS 3.17.5HighNVD

Official description

XWiki Platform is a generic wiki platform. Starting in version 3.2-m3, users can deduce the content of the password fields by repeated call to `LiveTableResults` and `WikisLiveTableResultsMacros`. The issue can be fixed by upgrading to versions 14.7-rc-1, 13.4.4, or 13.10.9 and higher, or in version >= 3.2M3 by applying the patch manually on `LiveTableResults` and `WikisLiveTableResultsMacros`.

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

The underlying weakness: Improper Restriction of Excessive Authentication Attempts

The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

How developers prevent this class of flaw

  • Common protection mechanisms include: Disconnecting the user after a small number of failed attempts Implementing a timeout Locking out a targeted account Requiring a computational task on the user's part.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator.

More Improper Restriction of Excessive Authentication Attempts vulnerabilities (CWE-307)

Timeline

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

References

Other vulnerabilities in xwiki-platform

All xwiki-platform vulnerabilities

Recent Improper Restriction of Excessive Authentication Attempts vulnerabilities

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