Debian update for openldap



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-12243
CWE-ID CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openldap (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource management error

EUVDB-ID: #VU27445

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12243

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error when performing searches with nested boolean expressions in filter.c within the slapd daemon in OpenLDAP. A remote attacker can send a specially crafted LDAP request to the affected server and crash the LDAP service.

Mitigation

Update openldap package to one of the following versions: 2.4.44+dfsg-5+deb9u4, 2.4.47+dfsg-3+deb10u2.

Vulnerable software versions

openldap (Debian package): 2.4.44+dfsg-5+deb9u1~bpo8+1 - 2.4.47+dfsg-3+deb10u1

CPE2.3 External links

https://www.debian.org/security/2020/dsa-4666


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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