Individual skill
exploiting-ldap-injection
Exploiting LDAP injection where web applications build LDAP search filters from unsanitized user input, letting an attacker manipulate filter logic to bypass authentication, enumerate directory objects, and blind-extract attribute values such as passwords. Activates when login forms, search boxes, or directory lookups feed user input into LDAP filters (uid, cn, mail, etc.).
internal/tools/skills/data/web-application-security/exploiting-ldap-injection/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Yes
- Scanner rules are current
- Yes
- Repository scan complete
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- Skill scan complete
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,325
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- ldap-injection Declared skill tag
- authentication-bypass Declared skill tag
- owasp Declared skill tag
- web-security Declared skill tag
- security Derived category
- testing Derived category
- security-application Derived category
Files and excerpt
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# Exploiting LDAP Injection
## When to Use
- During authorized tests of login forms backed by an LDAP/Active Directory directory
- When a search/lookup feature queries a directory by `uid`, `cn`, `mail`, `sn`, or similar attributes
[Credential-related source omitted]
- When you spot LDAP-style errors, `phpLDAPadmin`, or directory-driven address books / user pickers
- When testing intranet portals, SSO bridges, or HR/employee directories
## Critical: Variants Most Often Missed
LDAP filters are prefix/Polish notation: `(&(a=1)(b=2))` = AND, `(|(a=1)(b=2))` = OR, `(!(a=1))` = NOT. The wildcard `*` matches anything and is the single most powerful primitive. Filters MUST stay syntactically valid — prefer sending ONE clean filter. Test the full matrix for every input:
