Linux Distros Unpatched Vulnerability : CVE-2026-110777

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(365942);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/14");

  script_cve_id("CVE-2026-110777");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-110777");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH
    property automatically read the targeted local file, base64-encode its contents and upload it back to the
    server when the event is saved. There are no file path restrictions or checks to verify whether the
    attachment originally came from the server or was added locally. This allows an attacker with access to a
    shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with
    malicious calendar events. (CVE-2026-110777)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-110777");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-110777");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-ui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:evolution-data-server-ui-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-ui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:evolution-data-server-ui-devel");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "evolution-data-server"},
          {"reference": "evolution-data-server-devel"},
          {"reference": "evolution-data-server-doc"},
          {"reference": "evolution-data-server-langpacks"},
          {"reference": "evolution-data-server-perl"},
          {"reference": "evolution-data-server-tests"},
          {"reference": "evolution-data-server-ui"},
          {"reference": "evolution-data-server-ui-devel"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}