Ubuntu update for LDB

1) Out-of-bounds read

EUVDB-ID: #VU17876

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 - 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

Update the affected packages.

Ubuntu 18.10

libldb1 - 2:1.4.0+really1.3.5-2ubuntu0.1

Ubuntu 18.04 LTS

libldb1 - 2:1.2.3-1ubuntu0.1

Ubuntu 16.04 LTS

libldb1 - 2:1.1.24-1ubuntu3.1

Ubuntu 14.04 LTS

libldb1 - 1:1.1.24-0ubuntu0.14.04.2

Vulnerable software versions

ldb (Ubuntu package): 1:1.1.24-0ubuntu0.14.04.1 - 2:1.2.2-2

CPE2.3

• cpe:2.3:a:canonical:ldb_ubuntu_package:1:1.1.24-0ubuntu0.14.04.1:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:ldb_ubuntu_package:2:1.1.17-2:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:ldb_ubuntu_package:2:1.1.20-1:*:*:*:*:ubuntu:*:*

External links

https://usn.ubuntu.com/3895-1/

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.