# CVE-2021-3670: samba-vfs-modules: MaxQueryDuration not honoured in Samba AD DC LDAP

CVE-2021-3670 is fixed in 19 products on 1 platform, first by ctdb 2:4.13.17~dfsg-0ubuntu1.20.04.1, released July 26, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-3670
- Priority: Routine
- CVSS: 6.5 (Low)
- EPSS: 0.0233
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2021

## Description

MaxQueryDuration not honoured in Samba AD DC LDAP

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ctdb Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [ctdb 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ctdb-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | ldb-tools Ubuntu 20.04 LTS (focal) | 2:2.2.3-0ubuntu0.20.04.3 | [ldb-tools 2:2.2.3-0ubuntu0.20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ldb-tools-2-2.2.3-0ubuntu0.20.04.3.md) | Jul 26, 2022 |
| Linux | libldb2 Ubuntu 20.04 LTS (focal) | 2:2.2.3-0ubuntu0.20.04.3 | [libldb2 2:2.2.3-0ubuntu0.20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libldb2-2-2.2.3-0ubuntu0.20.04.3.md) | Jul 26, 2022 |
| Linux | libnss-winbind Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [libnss-winbind 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libnss-winbind-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | libpam-winbind Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [libpam-winbind 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpam-winbind-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | libsmbclient Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [libsmbclient 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsmbclient-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | libwbclient0 Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [libwbclient0 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libwbclient0-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | python3-ldb Ubuntu 20.04 LTS (focal) | 2:2.2.3-0ubuntu0.20.04.3 | [python3-ldb 2:2.2.3-0ubuntu0.20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-ldb-2-2.2.3-0ubuntu0.20.04.3.md) | Jul 26, 2022 |
| Linux | python3-samba Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [python3-samba 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-samba-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | registry-tools Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [registry-tools 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-registry-tools-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba Debian 12.15 (bookworm) | 2:4.16.0+dfsg-2 | [DEBIAN-CVE-2021-3670](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3670.md) | Aug 23, 2022 |
| Linux | samba Debian 13.5 (trixie) | 2:4.16.0+dfsg-2 | [DEBIAN-CVE-2021-3670](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3670.md) | Aug 23, 2022 |
| Linux | samba Debian 14 | 2:4.16.0+dfsg-2 | [DEBIAN-CVE-2021-3670](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3670.md) | Aug 23, 2022 |
| Linux | samba Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-common Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-common 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-common-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-common-bin Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-common-bin 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-common-bin-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-dsdb-modules Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-dsdb-modules 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-dsdb-modules-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-libs Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-libs 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-libs-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-testsuite Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-testsuite 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-testsuite-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | samba-vfs-modules Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [samba-vfs-modules 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-samba-vfs-modules-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | smbclient Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [smbclient 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-smbclient-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |
| Linux | winbind Ubuntu 20.04 LTS (focal) | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | [winbind 2:4.13.17~dfsg-0ubuntu1.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-winbind-2-4.13.17-dfsg-0ubuntu1.20.04.1.md) | Jul 26, 2022 |

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