#VU17876 Out-of-bounds read in ldb - CVE-2019-3824

Vulnerability identifier: #VU17876

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-3824

CWE-ID: CWE-125

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
ldb
Universal components / Libraries / Libraries used by multiple products

Vendor: Samba

Description

The vulnerability allows a remote attacker to gain perform denial of service attack or gain access to sensitive information.

The vulnerability exists due to a boundary condition within the ldb_wildcard_compare() function in ldb_match.c. A remote attacker can send a specially crafted LDAP request to the affected application, trigger out-of-bounds read error and perform denial of service attack or read portions of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ldb: 1.1.10 - 1.6.1

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External links
https://bugzilla.samba.org/show_bug.cgi?id=13773

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.