An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products. Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed.

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4199 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4199-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Santiago Ruano Rincn     May 31, 2025                                  https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : tcpdf     Version        : 6.3.5+dfsg1-1+deb11u1     CVE ID         : CVE-2024-22640 CVE-2024-22641 CVE-2024-32489 CVE-2024-51058                      CVE-2024-56519 CVE-2024-56520 CVE-2024-56522 CVE-2024-56527

    Multiple security issues were discovered in TCPDF, a PHP class for     generating PDF files on-the-fly, which may result in denial of service,     cross-site scripting or information disclosure.

    CVE-2024-22640

        ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML         page with a crafted color.

    CVE-2024-22641

        ReDoS (Regular Expression Denial of Service) when parsing a specially         crafted SVG file.

    CVE-2024-32489

        TCPDF mishandles calls that use HTML syntax.

    CVE-2024-51058

        Local File Inclusion (LFI) vulnerability through the <img> src tag.

    CVE-2024-56519

        setSVGStyles does not sanitize the SVG font-family attribute.

    CVE-2024-56520

        TCPDF, throught its use of tc-lib-pdf-font, mishandles fonts like FontBBox         for Type 1 and misparses TrueType fonts.

    CVE-2024-56522

        The unserializeTCPDFtag() function doesn't make use of constant-time         function to compare TCPDF tag hashes.

    CVE-2024-56527

        The Error() function lacks an htmlspecialchars call for the error message.

    For Debian 11 bullseye, these problems have been fixed in version     6.3.5+dfsg1-1+deb11u1.

    We recommend that you upgrade your tcpdf packages.

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

    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     Attachment:
    signature.asc     Description: PGP signature

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 remote Debian 12 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-5933 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-5933-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     June 01, 2025                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : tcpdf     CVE ID         : CVE-2024-22640 CVE-2024-22641 CVE-2024-32489                      CVE-2024-51058 CVE-2024-56519 CVE-2024-56520                      CVE-2024-56522 CVE-2024-56527

    Multiple security issues were discovered in TCPDF, a PHP class for     generating PDF files on-the-fly, which may result in denial of service,     cross-site scripting or information disclosure.

    For the stable distribution (bookworm), these problems have been fixed in     version 6.6.2+dfsg1-1+deb12u1.

    We recommend that you upgrade your tcpdf packages.

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

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

    Mailing list: debian-security-announce@lists.debian.org

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

  - An issue was discovered in tc-lib-pdf-font before 2.6.4, as used in TCPDF before 6.8.0 and other products.
    Fonts are mishandled, e.g., FontBBox for Type 1 and TrueType fonts is misparsed. (CVE-2024-56520)

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

ID	Name	Product	Family	Severity
237717	Debian dla-4199 : php-tcpdf - security update	Nessus	Debian Local Security Checks	medium
237632	Debian dsa-5933 : php-tcpdf - security update	Nessus	Debian Local Security Checks	medium
231237	Linux Distros Unpatched Vulnerability : CVE-2024-56520	Nessus	Misc.	high

Detections

Analytics

CVE-2024-56520

high

Tenable Plugins

medium

medium

high