# CVE-2020-16135: libssh: libssh is a library which implements the SSH protocol

CVE-2020-16135 is fixed in 5 products on 1 platform, first by libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7, released July 29, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-16135
- Priority: Routine
- CVSS: 5.9 (Low)
- EPSS: 0.0411
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 29, 2020

## Description

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.  Security Fix(es):  * libssh: NULL pointer dereference in sftpserver.c if ssh_buffer_new returns NULL (CVE-2020-16135)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libssh RHEL 8 | 0:0.9.4-3.el8 | [RHSA-2021:4387](https://patchblox.com/security/data/fix/linux/rhsa-2021-4387.md) | Nov 9, 2021 |
| Linux | libssh ol 8 | 0:0.9.4-3.el8 | [ELSA-2021-4387](https://patchblox.com/security/data/fix/linux/elsa-2021-4387.md) | Nov 16, 2021 |
| Linux | libssh rocky 8 | 0:0.9.4-3.el8 | [RLSA-2021:4387](https://patchblox.com/security/data/fix/linux/rlsa-2021-4387.md) | Nov 9, 2021 |
| Linux | libssh-4 Ubuntu 18.04.6 LTS (bionic) | 0.8.0~20170825.94fa1e38-1ubuntu0.7 | [libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssh-4-0.8.0-20170825.94fa1e38-1ubuntu0.7.md) | Jul 29, 2020 |
| Linux | libssh-4 Ubuntu 20.04 LTS (focal) | 0.9.3-2ubuntu2.1 | [libssh-4 0.9.3-2ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssh-4-0.9.3-2ubuntu2.1.md) | Jul 29, 2020 |
| Linux | libssh-config RHEL 8 | 0:0.9.4-3.el8 | [RHSA-2021:4387](https://patchblox.com/security/data/fix/linux/rhsa-2021-4387.md) | Nov 9, 2021 |
| Linux | libssh-config ol 8 | 0:0.9.4-3.el8 | [ELSA-2021-4387](https://patchblox.com/security/data/fix/linux/elsa-2021-4387.md) | Nov 16, 2021 |
| Linux | libssh-devel RHEL 8 | 0:0.9.4-3.el8 | [RHSA-2021:4387](https://patchblox.com/security/data/fix/linux/rhsa-2021-4387.md) | Nov 9, 2021 |
| Linux | libssh-devel almalinux 8 | 0.9.4-3.el8 | [ALSA-2021:4387](https://patchblox.com/security/data/fix/linux/alsa-2021-4387.md) | Nov 9, 2021 |
| Linux | libssh-devel ol 8 | 0:0.9.4-3.el8 | [ELSA-2021-4387](https://patchblox.com/security/data/fix/linux/elsa-2021-4387.md) | Nov 16, 2021 |
| Linux | libssh-gcrypt-4 Ubuntu 18.04.6 LTS (bionic) | 0.8.0~20170825.94fa1e38-1ubuntu0.7 | [libssh-gcrypt-4 0.8.0~20170825.94fa1e38-1ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssh-gcrypt-4-0.8.0-20170825.94fa1e38-1ubuntu0.7.md) | Jul 29, 2020 |
| Linux | libssh-gcrypt-4 Ubuntu 20.04 LTS (focal) | 0.9.3-2ubuntu2.1 | [libssh-gcrypt-4 0.9.3-2ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssh-gcrypt-4-0.9.3-2ubuntu2.1.md) | Jul 29, 2020 |

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