CVE-2015-1854

Description

A flaw was found in the way Red Hat Directory Server performed authorization of modrdn operations. An unauthenticated attacker able to issue an ldapmodrdn call to the directory server could use this flaw to perform unauthorized modifications of entries in the directory server.

Statement

This issue does not affect the version of 389-ds-base package as shipped with Red Hat Enterprise Linux 6.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v2 Score Breakdown

Red HatNVDcve.org
Base Score4.85N/A
Attack VectorAdjacent NetworkNetworkN/A
Access ComplexityLowLowN/A
AuthenticationNoneNoneN/A
Confidentiality ImpactNoneNoneN/A
Integrity ImpactPartialPartialN/A
Availability ImpactPartialNoneN/A

Vector

Red Hat: AV:A/AC:L/Au:N/C:N/I:P/A:P

NVD: AV:N/AC:L/Au:N/C:N/I:P/A:N

Understanding the Weakness (CWE)

CWE-639

Access Control

Technical Impact: Bypass Protection Mechanism

Access control checks for specific user data or functionality can be bypassed.

Access Control

Technical Impact: Gain Privileges or Assume Identity

Horizontal escalation of privilege is possible (one user can view/modify information of another user).

Access Control

Technical Impact: Gain Privileges or Assume Identity

Vertical escalation of privilege is possible if the user-controlled key is actually a flag that indicates administrator status, allowing the attacker to gain administrative access.

Acknowledgements

This issue was discovered by Simo Sorce (Red Hat).

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