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    CVE-2020-1958

    When LDAP authentication is enabled in Apache Druid 0.17.0, callers of Druid APIs with a valid set of LDAP credentials can bypass the credentialsValidator.userSearch filter barrier that determines if a valid LDAP user is allowed to authenticate with Druid. They are still subject to role-based authorization checks, if configured. Callers of Druid APIs can also retrieve any LDAP attribute values of users that exist on the LDAP server, so long as that information is visible to the Druid server. This information disclosure does not require the caller itself to be a valid LDAP user.

    Published:Apr 1, 2020
    Last Modified:Nov 21, 2024
    EPS:Apr 1, 2020
    EPSS Score:0.15565
    CVSS Score:6.5

    Affected Products

    Vendor
    Apache
    Product
    Druid

    Exploits

    https://github.com/ggolawski/CVE-2020-1958

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-105 HTTP Request Splitting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-116 Excavation
    CAPEC-120 Double Encoding
    CAPEC-122 Privilege Abuse
    CAPEC-127 Directory Indexing
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-169 Footprinting
    CAPEC-17 Using Malicious Files
    CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
    CAPEC-206 Signing Malicious Code
    CAPEC-22 Exploiting Trust in Client
    CAPEC-224 Fingerprinting
    CAPEC-234 Hijacking a privileged process
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-273 HTTP Response Smuggling
    CAPEC-28 Fuzzing
    CAPEC-285 ICMP Echo Request Ping
    CAPEC-287 TCP SYN Scan
    CAPEC-290 Enumerate Mail Exchange (MX) Records
    CAPEC-291 DNS Zone Transfers
    CAPEC-292 Host Discovery
    CAPEC-293 Traceroute Route Enumeration
    CAPEC-294 ICMP Address Mask Request
    CAPEC-295 Timestamp Request
    CAPEC-296 ICMP Information Request
    CAPEC-297 TCP ACK Ping
    CAPEC-298 UDP Ping
    CAPEC-299 TCP SYN Ping
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-300 Port Scanning
    CAPEC-301 TCP Connect Scan
    CAPEC-302 TCP FIN Scan
    CAPEC-303 TCP Xmas Scan
    CAPEC-304 TCP Null Scan
    CAPEC-305 TCP ACK Scan
    CAPEC-306 TCP Window Scan
    CAPEC-307 TCP RPC Scan
    CAPEC-308 UDP Scan
    CAPEC-309 Network Topology Mapping
    CAPEC-310 Scanning for Vulnerable Software
    CAPEC-312 Active OS Fingerprinting
    CAPEC-313 Passive OS Fingerprinting
    CAPEC-317 IP ID Sequencing Probe
    CAPEC-318 IP 'ID' Echoed Byte-Order Probe
    CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe
    CAPEC-320 TCP Timestamp Probe
    CAPEC-321 TCP Sequence Number Probe
    CAPEC-322 TCP (ISN) Greatest Common Divisor Probe
    CAPEC-323 TCP (ISN) Counter Rate Probe
    CAPEC-324 TCP (ISN) Sequence Predictability Probe
    CAPEC-325 TCP Congestion Control Flag (ECN) Probe
    CAPEC-326 TCP Initial Window Size Probe
    CAPEC-327 TCP Options Probe
    CAPEC-328 TCP 'RST' Flag Checksum Probe
    CAPEC-329 ICMP Error Message Quoting Probe
    CAPEC-330 ICMP Error Message Echoing Integrity Probe
    CAPEC-34 HTTP Response Splitting
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-472 Browser Fingerprinting
    CAPEC-497 File Discovery
    CAPEC-508 Shoulder Surfing
    CAPEC-51 Poison Web Service Registry
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-573 Process Footprinting
    CAPEC-574 Services Footprinting
    CAPEC-575 Account Footprinting
    CAPEC-576 Group Permission Footprinting
    CAPEC-577 Owner Footprinting
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-6 Argument Injection
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-61 Session Fixation
    CAPEC-616 Establish Rogue Location
    CAPEC-62 Cross Site Request Forgery
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-642 Replace Binaries
    CAPEC-643 Identify Shared Files/Directories on System
    CAPEC-646 Peripheral Footprinting
    CAPEC-651 Eavesdropping
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-83 XPath Injection
    CAPEC-84 XQuery Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-23906 (CVSS 9.8) — Affected Products and Versions * Apache Druid * Affected Versions: 0.17.0 through 35.x (all versions pri…
    CVE-2025-59390 (CVSS 9.8) — Apache Druid’s Kerberos authenticator uses a weak fallback secret when the `druid.auth.authenticator.kerberos.…
    CVE-2025-27888 (CVSS 5.8) — Severity: medium (5.8) / important Server-Side Request Forgery (SSRF), Improper Neutralization of Input Durin…
    CVE-2024-45537 (CVSS 6.5) — Apache Druid allows users with certain permissions to read data from other database systems using JDBC. This f…
    CVE-2024-45384 (CVSS 5.3) — Padding Oracle vulnerability in Apache Druid extension, druid-pac4j. This could allow an attacker to manipulat…
    CVE-2022-28889 (CVSS 4.3) — In Apache Druid 0.22.1 and earlier, the server did not set appropriate headers to prevent clickjacking. Druid …
    CVE-2021-44791 (CVSS 6.1) — In Apache Druid 0.22.1 and earlier, certain specially-crafted links result in unescaped URL parameters being s…
    CVE-2021-36749 (CVSS 6.5) — In the Druid ingestion system, the InputSource is used for reading data from a certain data source. However, t…
    CVE-2021-26920 (CVSS 6.5) — In the Druid ingestion system, the InputSource is used for reading data from a certain data source. However, t…
    CVE-2021-26919 (CVSS 8.8) — Apache Druid allows users to read data from other database systems using JDBC. This functionality is to allow …

    References

    https://lists.apache.org/thread.html/r026540c617d334007810cd8f0068f617b5c78444be00a31fc1b03390%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r1526dbce98a138629a41daa06c13393146ddcaf8f9d273cc49d57681%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r1c32c95543d44559b8d7fd89b0a85f728c80e8b715685bbf788a15a4%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r47c90a378efdb3fd07ff7f74095b8eb63b3ca93b8ada5c2661c5e371%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r75e74d39c41c1b95a658b6a9f75fc6fd02b1d1922566a0ee4ee2fdfc%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r9d437371793b410f8a8e18f556d52d4bb68e18c537962f6a97f4945e%40%3Cdev.druid.apache.org%3E
    https://lists.apache.org/thread.html/rf70876ecafb45b314eff9d040c5281c4adb0cb7771eb029448cfb79b%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/rffabc9e83cc2831bbee5db32b3965b84b09346a26ebc1012db63d28c%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r026540c617d334007810cd8f0068f617b5c78444be00a31fc1b03390%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r1526dbce98a138629a41daa06c13393146ddcaf8f9d273cc49d57681%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r1c32c95543d44559b8d7fd89b0a85f728c80e8b715685bbf788a15a4%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r47c90a378efdb3fd07ff7f74095b8eb63b3ca93b8ada5c2661c5e371%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r75e74d39c41c1b95a658b6a9f75fc6fd02b1d1922566a0ee4ee2fdfc%40%3Ccommits.druid.apache.org%3E
    https://lists.apache.org/thread.html/r9d437371793b410f8a8e18f556d52d4bb68e18c537962f6a97f4945e%40%3Cdev.druid.apache.org%3E
    https://lists.apache.org/thread.html/rf70876ecafb45b314eff9d040c5281c4adb0cb7771eb029448cfb79b%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/rffabc9e83cc2831bbee5db32b3965b84b09346a26ebc1012db63d28c%40%3Ccommits.druid.apache.org%3E

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High