CVE-2018-12421

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-06-14 · updated 2026-06-17
Weakness: CWE-640

Description

LTB (aka LDAP Tool Box) Self Service Password before 1.3 allows a change to a user password (without knowing the old password) via a crafted POST request, because the ldap_bind return value is mishandled and the PHP data type is not constrained to be a string.

Affected products

ltb-project LDAP Tool Box Self Service Password: before 1.3 — fixed in 1.3

How to fix

Upgrade to a fixed version: ltb-project LDAP Tool Box Self Service Password 1.3. Check the vendor advisory for mitigations.

References

https://github.com/ltb-project/self-service-password/issues/209
https://github.com/ltb-project/self-service-password/issues/211
https://lists.ltb-project.org/pipermail/ltb-announce/2018-June/000023.html
https://github.com/ltb-project/self-service-password/issues/209
https://github.com/ltb-project/self-service-password/issues/211
https://lists.ltb-project.org/pipermail/ltb-announce/2018-June/000023.html

Get alerted when CVE-2018-12421 or the next vulnerability affects your stack