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01 Record

CVE-2020-17525

Remote unauthenticated denial-of-service in Subversion mod_authz_svn

UnratedPUBLISHEDCNA: apache
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

Remote unauthenticated denial-of-service in Subversion mod_authz_svn

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
40.07% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 98.5% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-03-17 09:20Z5 YR AGO
Last updated
2025-02-13 16:27Z1 YR AGO
Reserved
2020-08-12
Assigning CNA
apache
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
9b99d5f14da14032d93f28ae0f4e7f137492ec91d790d65c0eb7f46751b46a42

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache Subversionmod_authz_svn to < 1.14.1—

06 References

07 Fixed in

AlmaLinux 8

  • libserf
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.3.9-9.module_el8.3.0+2053+ac338b6d
    • Affected before 1.3.9-9.module_el8.4.0+2266+ac338b6d
    • Affected before 1.3.9-9.module_el8.6.0+2912+eb1cdf5a
  • mod_dav_svn
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-gnome
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-javahl
    Fixed in 1.10.2-4.module_el8.3.0+2053+ac338b6d
  • subversion-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-perl
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-tools
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • utf8proc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.1.1-5.module_el8.3.0+2053+ac338b6d
    • Affected before 2.1.1-5.module_el8.4.0+2266+ac338b6d
    • Affected before 2.1.1-5.module_el8.6.0+2912+eb1cdf5a

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • subversion
    Fixed in 1.14.1-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • libserf
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.3.9-9.module_el8.3.0+2053+ac338b6d
    • Affected before 1.3.9-9.module_el8.4.0+2266+ac338b6d
    • Affected before 1.3.9-9.module_el8.6.0+2912+eb1cdf5a
  • mod_dav_svn
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-gnome
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-javahl
    Fixed in 1.10.2-4.module_el8.3.0+2053+ac338b6d
  • subversion-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-perl
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • subversion-tools
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.10.2-4.module_el8.3.0+2053+ac338b6d
    • Affected before 1.10.2-4.module_el8.4.0+2266+ac338b6d
    • Affected before 1.10.2-4.module_el8.5.0+73+aa7e29ed
  • utf8proc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.1.1-5.module_el8.3.0+2053+ac338b6d
    • Affected before 2.1.1-5.module_el8.4.0+2266+ac338b6d
    • Affected before 2.1.1-5.module_el8.6.0+2912+eb1cdf5a

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • subversion
    Fixed in 1.14.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • subversion
    Fixed in 1.14.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • subversion
    Fixed in 1.14.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • subversion
    Fixed in 1.9.7-4ubuntu1.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • subversion
    Fixed in 1.13.0-3ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • subversion
    Fixed in 1.9.3-2ubuntu1.3+esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.