CVE-2018-1000134 is a critical-severity (CVSS 9.8) CWE-521 vulnerability in com.unboundid:unboundid-ldapsdk. A fix is available for com.unboundid:unboundid-ldapsdk — see the affected versions and patch details below.
Weak Password Requirements in UnboundID LDAP SDK
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
com.unboundid:unboundid-ldapsdkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
UnboundID LDAP SDK version from commit 801111d8b5c732266a5dbd4b3bb0b6c7b94d7afb up to commit 8471904a02438c03965d21367890276bc25fa5a6, where the issue was reported and fixed contains an Incorrect Access Control vulnerability in process function in SimpleBindRequest class doesn't check for empty password when running in synchronous mode. commit with applied fix https://github.com/pingidentity/ldapsdk/commit/8471904a02438c03965d21367890276bc25fa5a6#diff-f6cb23b459be1ec17df1da33760087fd that can result in Ability to impersonate any valid user. This attack appear to be exploitable via Providing valid username and empty password against servers that do not do additional validation as per https://tools.ietf.org/html/rfc4513#section-5.1.1. This vulnerability appears to have been fixed in after commit 8471904a02438c03965d21367890276bc25fa5a6.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.unboundid:unboundid-ldapsdk | ≥ 1.1.0&&< 4.0.5 | 4.0.5com.unboundid:unboundid-ldapsdk:4.0.5 |
Affected Products
ldapsdkpingidentityDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.unboundid:unboundid-ldapsdk, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.unboundid:unboundid-ldapsdk to 4.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000134 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Red Hat Enterprise Virtualization does not use the UnboundID SDK in synchronous mode, and hence does not expose this vulnerability in its default configuration.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Virtualization Engine 4.1 | unboundid-ldapsdk-0:4.0.5-1.el7ev | RHSA-2018:1713 |
| RHPAM 7.13.1 async | unboundid-ldapsdk | RHSA-2023:1334 |
Frequently Asked Questions
Is CVE-2018-1000134 in your dependencies?
Find it across Maven, including transitive dependencies.