CVE-2017-2591: fedoraproject 389_directory_server Heap-based Buffer Overflow

Vulnerability summary

CVE-2017-2591 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in fedoraproject 389_directory_server. EPSS estimates a 2.81% chance of exploitation in the next 30 days, higher than 86.2% of scored vulnerabilities.

Timeline

1. 30-04-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "attribute uniqueness" plugin of 389 Directory Server. An authenticated, or possibly unauthenticated, attacker could use this flaw to force an out-of-bound heap memory read, possibly triggering a crash of the LDAP service.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.