Debian 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 package to version: 2:1.1.27-1+deb9u1

Vulnerable software versions

ldb (Debian package): 2:1.1.17-2+deb8u1 - 2:1.1.27-1

CPE2.3

• cpe:2.3:a:debian:ldb_debian_package:2:1.1.17-2 deb8u1:*:*:*:*:debian_linux:*:*
• cpe:2.3:a:debian:ldb_debian_package:2:1.1.17-2:*:*:*:*:debian_linux:*:*
• cpe:2.3:a:debian:ldb_debian_package:2:1.1.20-0 deb8u1:*:*:*:*:debian_linux:*:*

External links

https://www.debian.org/security/2019/dsa-4397

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.