Denial of service in Samba ldb



Published: 2019-02-27
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3824
CWE-ID CWE-125
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Subscribe 		ldb
Universal components / Libraries / Libraries used by multiple products

Vendor Samba

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU17876

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-3824

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

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

External links

http://bugzilla.samba.org/show_bug.cgi?id=13773


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.



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