# CVE-2020-12243: ldap-utils: In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in den...

CVE-2020-12243 is fixed in 6 products on 1 platform, first by ldap-utils 2.4.45+dfsg-1ubuntu1.5, released April 28, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-12243
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0472
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 28, 2020

## Description

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ldap-utils Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.5 | [ldap-utils 2.4.45+dfsg-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ldap-utils-2.4.45-dfsg-1ubuntu1.5.md) | Apr 28, 2020 |
| Linux | ldap-utils Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [ldap-utils 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ldap-utils-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |
| Linux | libldap-2.4-2 Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.5 | [libldap-2.4-2 2.4.45+dfsg-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libldap-2.4-2-2.4.45-dfsg-1ubuntu1.5.md) | Apr 28, 2020 |
| Linux | libldap-2.4-2 Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [libldap-2.4-2 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libldap-2.4-2-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |
| Linux | libldap-common Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.5 | [libldap-common 2.4.45+dfsg-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libldap-common-2.4.45-dfsg-1ubuntu1.5.md) | Apr 28, 2020 |
| Linux | libldap-common Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [libldap-common 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libldap-common-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |
| Linux | slapd Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.5 | [slapd 2.4.45+dfsg-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-slapd-2.4.45-dfsg-1ubuntu1.5.md) | Apr 28, 2020 |
| Linux | slapd Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [slapd 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |
| Linux | slapd-contrib Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [slapd-contrib 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-contrib-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |
| Linux | slapd-smbk5pwd Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.5 | [slapd-smbk5pwd 2.4.45+dfsg-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-slapd-smbk5pwd-2.4.45-dfsg-1ubuntu1.5.md) | Apr 28, 2020 |
| Linux | slapd-smbk5pwd Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.2 | [slapd-smbk5pwd 2.4.49+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-smbk5pwd-2.4.49-dfsg-2ubuntu1.2.md) | Apr 28, 2020 |

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