YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has a package installed that is affected by a vulnerability as referenced in the USN-7844-1 advisory.

    It was discovered that YAML::Syck did not properly handle parsing

    YAML files. An attacker could possibly use this issue to expose sensitive information.

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.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1248 advisory.

    YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and     potential information disclosure

    Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read

    The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no     indication that the issue leads to accessing memory outside that allocated to the module. (CVE-2025-11683)

Tenable has extracted the preceding description block directly from the tested product 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 version of perl-YAML-Syck installed on the remote host is prior to 1.27-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-3049 advisory.

    YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and     potential information disclosure

    Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read

    The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no     indication that the issue leads to accessing memory outside that allocated to the module. (CVE-2025-11683)

Tenable has extracted the preceding description block directly from the tested product 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and     potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which     allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and     empty values. There is no indication that the issue leads to accessing memory outside that allocated to     the module. (CVE-2025-11683)

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

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-568b5b6ddc advisory.

    This update addresses a flaw in which processing a specially-crafted YAML document could lead to accessing     information outside of the document itself and hence potential information disclosure.


Tenable has extracted the preceding description block directly from the Fedora 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 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-5b2d494617 advisory.

    This update addresses a flaw in which processing a specially-crafted YAML document could lead to accessing     information outside of the document itself and hence potential information disclosure.


Tenable has extracted the preceding description block directly from the Fedora 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	Name	Product	Family	Severity
272032	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : YAML::Syck vulnerability (USN-7844-1)	Nessus	Ubuntu Local Security Checks	medium
271777	Amazon Linux 2023 : perl-YAML-Syck (ALAS2023-2025-1248)	Nessus	Amazon Linux Local Security Checks	medium
271747	Amazon Linux 2 : perl-YAML-Syck, --advisory ALAS2-2025-3049 (ALAS-2025-3049)	Nessus	Amazon Linux Local Security Checks	medium
271508	Linux Distros Unpatched Vulnerability : CVE-2025-11683	Nessus	Misc.	medium
271486	Fedora 41 : perl-YAML-Syck (2025-568b5b6ddc)	Nessus	Fedora Local Security Checks	medium
271485	Fedora 42 : perl-YAML-Syck (2025-5b2d494617)	Nessus	Fedora Local Security Checks	medium

Detections

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CVE-2025-11683

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Tenable Plugins

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