Thomas Akesson discovered a remotely triggerable vulnerability in the mod_authz_svn module in Subversion, a version control system. When using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option an unauthenticated remote client can take advantage of this flaw to cause a denial of service by sending a request for a non-existing repository URL.

An update of the subversion package has been released.

According to the version of the subversion packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A null-pointer-dereference flaw was found in     mod_authz_svn of subversion. This flaw allows a remote,     unauthenticated attacker to cause a denial of service     in some server configurations. The highest threat from     this vulnerability is to system     availability.(CVE-2020-17525)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:0507 advisory.

  - Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the     AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL.
    This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn     servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7 (CVE-2020-17525)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5322-1 advisory.

    Thomas Akesson discovered that Subversion incorrectly handled certain inputs. An attacker could possibly     use this issue to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 33 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-a3a0273cb2 advisory.

  - Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the     AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL.
    This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn     servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7 (CVE-2020-17525)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:0507 advisory.

  - subversion: Remote unauthenticated denial of service in mod_authz_svn (CVE-2020-17525)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-0507 advisory.

    subversion     [1.10.2-4]
    - add security fix for CVE-2020-17525

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
146514	Debian DSA-4851-1 : subversion - security update	Nessus	Debian Local Security Checks	2021/2/16	2024/10/11	high
148287	Photon OS 2.0: Subversion PHSA-2021-2.0-0333	Nessus	PhotonOS Local Security Checks	2021/4/1	2024/7/22	high
150199	EulerOS 2.0 SP9 : subversion (EulerOS-SA-2021-1959)	Nessus	Huawei Local Security Checks	2021/6/3	2023/12/27	high
184826	Rocky Linux 8 : subversion:1.10 (RLSA-2021:0507)	Nessus	Rocky Linux Local Security Checks	2023/11/7	2024/10/11	high
158866	Ubuntu 16.04 ESM : Subversion vulnerability (USN-5322-1)	Nessus	Ubuntu Local Security Checks	2022/3/12	2024/10/11	high
146467	Fedora 33 : subversion (2021-a3a0273cb2)	Nessus	Fedora Local Security Checks	2021/2/12	2024/10/11	high
146490	CentOS 8 : subversion:1.10 (CESA-2021:0507)	Nessus	CentOS Local Security Checks	2021/2/15	2024/10/11	high
146639	Oracle Linux 8 : subversion:1.10 (ELSA-2021-0507)	Nessus	Oracle Linux Local Security Checks	2021/2/20	2024/11/1	high
148291	Photon OS 3.0: Subversion PHSA-2021-3.0-0213	Nessus	PhotonOS Local Security Checks	2021/4/1	2025/8/22	high
148818	Photon OS 1.0: Subversion PHSA-2021-1.0-0379	Nessus	PhotonOS Local Security Checks	2021/4/20	2024/1/3	high

検出

プラグインの検索

high

high

high

high

high

high

high

high

high

high