# CVE-2020-17525: subversion-tools: Subversion (SVN) is a concurrent version control system which enables one or more users to collaborate in developing...

CVE-2020-17525 is fixed in 16 products on 1 platform, first by libapache2-mod-svn 1.9.7-4ubuntu1.1, released February 10, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-17525
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.4008
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 10, 2021

## Description

Subversion (SVN) is a concurrent version control system which enables one or more users to collaborate in developing and maintaining a hierarchy of files and directories while keeping a history of all changes.  Security Fix(es):  * subversion: Remote unauthenticated denial of service in mod_authz_svn (CVE-2020-17525)  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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libapache2-mod-svn Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [libapache2-mod-svn 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libapache2-mod-svn-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | libapache2-mod-svn Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [libapache2-mod-svn 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libapache2-mod-svn-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | libserf RHEL 8 | 0:1.3.9-9.module+el8.3.0+6671+2675c974 | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | libserf ol 8 | 0:1.3.9-9.module+el8.3.0+7671+a87d5147 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | libsvn-java Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [libsvn-java 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsvn-java-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | libsvn-java Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [libsvn-java 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsvn-java-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | libsvn-perl Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [libsvn-perl 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsvn-perl-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | libsvn-perl Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [libsvn-perl 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsvn-perl-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | libsvn1 Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [libsvn1 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsvn1-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | libsvn1 Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [libsvn1 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsvn1-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | mod_dav_svn RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | mod_dav_svn ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | python-subversion Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [python-subversion 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-subversion-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | python-subversion Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [python-subversion 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-subversion-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | ruby-svn Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [ruby-svn 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ruby-svn-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | ruby-svn Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [ruby-svn 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ruby-svn-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | subversion RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [subversion 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-subversion-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | subversion Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [subversion 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-subversion-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | subversion ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-devel RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-devel ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-gnome RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-gnome ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-javahl RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-javahl ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-libs RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-libs ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-perl RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-perl ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | subversion-tools RHEL 8 | 0:1.10.2-4.module+el8.3.0+9886+ac338b6d | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | subversion-tools Ubuntu 18.04.6 LTS (bionic) | 1.9.7-4ubuntu1.1 | [subversion-tools 1.9.7-4ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-subversion-tools-1.9.7-4ubuntu1.1.md) | Feb 10, 2021 |
| Linux | subversion-tools Ubuntu 20.04 LTS (focal) | 1.13.0-3ubuntu0.2 | [subversion-tools 1.13.0-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-subversion-tools-1.13.0-3ubuntu0.2.md) | Feb 10, 2021 |
| Linux | subversion-tools ol 8 | 0:1.10.2-4.module+el8.3.0+9645+c2a98c55 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |
| Linux | utf8proc RHEL 8 | 0:2.1.1-5.module+el8.3.0+6671+2675c974 | [RHSA-2021:0507](https://patchblox.com/security/data/fix/linux/rhsa-2021-0507.md) | Feb 15, 2021 |
| Linux | utf8proc ol 8 | 0:2.1.1-5.module+el8.3.0+7671+a87d5147 | [ELSA-2021-0507](https://patchblox.com/security/data/fix/linux/elsa-2021-0507.md) | Feb 20, 2021 |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.