ViewVC is a browser interface for CVS and Subversion version control repositories. Versions prior to 1.2.3 and 1.1.30 are vulnerable to cross-site scripting. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a Subversion repository exposed by an otherwise trusted ViewVC instance. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. Users should update to at least version 1.2.3 (if they are using a 1.2.x version of ViewVC) or 1.1.30 (if they are using a 1.1.x version). ViewVC 1.0.x is no longer supported, so users of that release lineage should implement one of the following workarounds. Users can edit their ViewVC EZT view templates to manually HTML-escape changed path "copyfrom paths" during rendering. Locate in your template set's `revision.ezt` file references to those changed paths, and wrap them with `[format "html"]` and `[end]`. For most users, that means that references to `[changes.copy_path]` will become `[format "html"][changes.copy_path][end]`. (This workaround should be reverted after upgrading to a patched version of ViewVC, else "copyfrom path" names will be doubly escaped.)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - ViewVC is a browser interface for CVS and Subversion version control repositories. Versions prior to 1.2.3     and 1.1.30 are vulnerable to cross-site scripting. The impact of this vulnerability is mitigated by the     need for an attacker to have commit privileges to a Subversion repository exposed by an otherwise trusted     ViewVC instance. The attack vector involves files with unsafe names (names that, when embedded into an     HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create.
    Users should update to at least version 1.2.3 (if they are using a 1.2.x version of ViewVC) or 1.1.30 (if     they are using a 1.1.x version). ViewVC 1.0.x is no longer supported, so users of that release lineage     should implement one of the following workarounds. Users can edit their ViewVC EZT view templates to     manually HTML-escape changed path copyfrom paths during rendering. Locate in your template set's     `revision.ezt` file references to those changed paths, and wrap them with `[format html]` and `[end]`.
    For most users, that means that references to `[changes.copy_path]` will become `[format     html][changes.copy_path][end]`. (This workaround should be reverted after upgrading to a patched version     of ViewVC, else copyfrom path names will be doubly escaped.) (CVE-2023-22464)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3266 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3266-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                           Chris Lamb     January 11, 2023                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : viewvc     Version        : 1.1.26-1+deb10u1     CVE IDs        : CVE-2023-22456 CVE-2023-22464

    It was discovered that there were two issues in viewvc, a web-based     interface for browsing Subversion and CVS repositories. The attack     vectors involved files with unsafe names; names that, when embedded     into an HTML stream, could cause the browser to run unwanted code.

    For Debian 10 buster, these problems have been fixed in version     1.1.26-1+deb10u1.

    We recommend that you upgrade your viewvc packages.

    For the detailed security status of viewvc please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/viewvc

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

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

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

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 541696ed-8d12-11ed-af80-ecf4bbc0bda0 advisory.

  - ViewVC, a browser interface for CVS and Subversion version control repositories, as a cross-site scripting     vulnerability that affects versions prior to 1.2.2 and 1.1.29. The impact of this vulnerability is     mitigated by the need for an attacker to have commit privileges to a Subversion repository exposed by an     otherwise trusted ViewVC instance. The attack vector involves files with unsafe names (names that, when     embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be     challenging to create. Users should update to at least version 1.2.2 (if they are using a 1.2.x version of     ViewVC) or 1.1.29 (if they are using a 1.1.x version). ViewVC 1.0.x is no longer supported, so users of     that release lineage should implement a workaround. Users can edit their ViewVC EZT view templates to     manually HTML-escape changed paths during rendering. Locate in your template set's `revision.ezt` file     references to those changed paths, and wrap them with `[format html]` and `[end]`. For most users, that     means that references to `[changes.path]` will become `[format html][changes.path][end]`. (This     workaround should be reverted after upgrading to a patched version of ViewVC, else changed path names will     be doubly escaped.) (CVE-2023-22456)

  - ViewVC is a browser interface for CVS and Subversion version control repositories. Versions prior to 1.2.3     and 1.1.30 are vulnerable to cross-site scripting. The impact of this vulnerability is mitigated by the     need for an attacker to have commit privileges to a Subversion repository exposed by an otherwise trusted     ViewVC instance. The attack vector involves files with unsafe names (names that, when embedded into an     HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create.
    Users should update to at least version 1.2.3 (if they are using a 1.2.x version of ViewVC) or 1.1.30 (if     they are using a 1.1.x version). ViewVC 1.0.x is no longer supported, so users of that release lineage     should implement one of the following workarounds. Users can edit their ViewVC EZT view templates to     manually HTML-escape changed path copyfrom paths during rendering. Locate in your template set's     `revision.ezt` file references to those changed paths, and wrap them with `[format html]` and `[end]`.
    For most users, that means that references to `[changes.copy_path]` will become `[format     html][changes.copy_path][end]`. (This workaround should be reverted after upgrading to a patched version     of ViewVC, else copyfrom path names will be doubly escaped.) (CVE-2023-22464)

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

ID	Name	Product	Family	Type	Severity
253115	Linux Distros Unpatched Vulnerability : CVE-2023-22464	Nessus	Misc.	Local	medium
169915	Debian dla-3266 : viewvc - security update	Nessus	Debian Local Security Checks	Local	medium
169702	FreeBSD : devel/viewvc-devel is vulnerable to cross-site scripting (541696ed-8d12-11ed-af80-ecf4bbc0bda0)	Nessus	FreeBSD Local Security Checks	Local	medium

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