Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. Starting in version 1.13 and prior to version 3.1.4, Pandoc is susceptible to an arbitrary file write vulnerability, which can be triggered by providing a specially crafted image element in the input when generating files using the `--extract-media` option or outputting to PDF format. This vulnerability allows an attacker to create or overwrite arbitrary files on the system ,depending on the privileges of the process running pandoc. It only affects systems that pass untrusted user input to pandoc and allow pandoc to be used to produce a PDF or with the `--extract-media` option. The fix is to unescape the percent-encoding prior to checking that the resource is not above the working directory, and prior to extracting the extension. Some code for checking that the path is below the working directory was flawed in a similar way and has also been fixed. Note that the `--sandbox` option, which only affects IO done by readers and writers themselves, does not block this vulnerability. The vulnerability is patched in pandoc 3.1.4. As a workaround, audit the pandoc command and disallow PDF output and the `--extract-media` option.

The remote Fedora 41 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-d62088b505 advisory.

    pandoc-cli replaces pandoc binary package

    Security fix for CVE-2023-35936 and CVE-2023-35936

    newly packaged ghc-base64 and ghc-isocline



Tenable has extracted the preceding description block directly from the Fedora 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 remote Fedora 40 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-7d83cbccb6 advisory.

    Security fix for CVE-2023-35936 and CVE-2023-38745

    pandoc:

    - backport fixes for CVE-2023-35936 and CVE-2023-38745

    pandoc-cli:

    - new package for pandoc binary

    patat:

    - update to 0.11.0.0 and enable tests

    base64, isocline, toml-parser: now packaged in Fedora




Tenable has extracted the preceding description block directly from the Fedora 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 remote Fedora 38 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-6ad6b9f417 advisory.

    Security fix for CVE-2023-35936 and CVE-2023-38745

    - pandoc: backport fixes for CVE-2023-35936 and CVE-2023-38745
    - base64 now packaged in Fedora



Tenable has extracted the preceding description block directly from the Fedora 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 remote Fedora 39 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-b458482d48 advisory.

    Security fix for CVE-2023-35936 and CVE-2023-38745

    pandoc:

    - backport fixes for CVE-2023-35936 and CVE-2023-38745

    pandoc-cli:

     - new package for pandoc binary

    patat:

    - update to 0.11.0.0 and enable tests

    base64, isocline, toml-parser: now packaged in Fedora




Tenable has extracted the preceding description block directly from the Fedora 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 remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3507 advisory.

  - Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that     uses this library. Starting in version 1.13 and prior to version 3.1.4, Pandoc is susceptible to an     arbitrary file write vulnerability, which can be triggered by providing a specially crafted image element     in the input when generating files using the `--extract-media` option or outputting to PDF format. This     vulnerability allows an attacker to create or overwrite arbitrary files on the system ,depending on the     privileges of the process running pandoc. It only affects systems that pass untrusted user input to pandoc     and allow pandoc to be used to produce a PDF or with the `--extract-media` option. The fix is to unescape     the percent-encoding prior to checking that the resource is not above the working directory, and prior to     extracting the extension. Some code for checking that the path is below the working directory was flawed     in a similar way and has also been fixed. Note that the `--sandbox` option, which only affects IO done by     readers and writers themselves, does not block this vulnerability. The vulnerability is patched in pandoc     3.1.4. As a workaround, audit the pandoc command and disallow PDF output and the `--extract-media` option.
    (CVE-2023-35936)

  - Pandoc before 3.1.6 allows arbitrary file write: this can be triggered by providing a crafted image     element in the input when generating files via the --extract-media option or outputting to PDF format.
    This allows an attacker to create or overwrite arbitrary files, depending on the privileges of the process     running Pandoc. It only affects systems that pass untrusted user input to Pandoc and allow Pandoc to be     used to produce a PDF or with the --extract-media option. NOTE: this issue exists because of an incomplete     fix for CVE-2023-35936 (failure to properly account for double encoded path names). (CVE-2023-38745)

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	Severity
211026	Fedora 41 : ghc-base64 / ghc-hakyll / ghc-isocline / gitit / pandoc / etc (2024-d62088b505)	Nessus	Fedora Local Security Checks	medium
194686	Fedora 40 : ghc-base64 / ghc-hakyll / ghc-isocline / ghc-toml-parser / gitit / etc (2024-7d83cbccb6)	Nessus	Fedora Local Security Checks	medium
192725	Fedora 38 : ghc-base64 / ghc-hakyll / gitit / pandoc / patat (2024-6ad6b9f417)	Nessus	Fedora Local Security Checks	medium
192711	Fedora 39 : ghc-base64 / ghc-hakyll / ghc-isocline / ghc-toml-parser / gitit / etc (2024-b458482d48)	Nessus	Fedora Local Security Checks	medium
178788	Debian DLA-3507-1 : pandoc - LTS security update	Nessus	Debian Local Security Checks	medium

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