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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.CONFLUENCE_CONFSERVER-93623.NASL
HistoryJan 16, 2024 - 12:00 a.m.

Atlassian Confluence 7.13 < 7.19.17 / 8.0.x < 8.4.5 / 8.5.x < 8.5.4 / 8.6.x < 8.6.2 DoS (CONFSERVER-93623)

2024-01-1600:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
17
atlassian confluence
version
dos
vulnerability
comsquareup.okio
gzipsource
advisory

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.8%

The version of Atlassian Confluence Server running on the remote host is 7.13.x prior to 7.19.17, 8.0.x prior to 8.5.4, or 8.6.x prior to 8.6.2. It is, therefore, affected by a denial of service (DoS) vulnerability as referenced in the CONFSERVER-93623 advisory. The vulnerability lies in the com.squareup.okio:okio-jvm dependency of Confluence Server, which is known to be vulnerable to DoS when using the GzipSource class to handle a crafted GZIP archive. This is due to GzipSource not handling an exception that might be raised when parsing a malformed gzip buffer.

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

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

include('compat.inc');

if (description)
{
  script_id(188065);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id("CVE-2023-3635");

  script_name(english:"Atlassian Confluence 7.13 < 7.19.17 / 8.0.x < 8.4.5 / 8.5.x < 8.5.4 / 8.6.x < 8.6.2 DoS (CONFSERVER-93623)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Atlassian Confluence host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of Atlassian Confluence Server running on the remote host is 7.13.x prior to 7.19.17, 8.0.x prior to 8.5.4,
or 8.6.x prior to 8.6.2. It is, therefore, affected by a denial of service (DoS) vulnerability as referenced in the CONFSERVER-93623
advisory. The vulnerability lies in the com.squareup.okio:okio-jvm dependency of Confluence Server, which is known to be
vulnerable to DoS when using the GzipSource class to handle a crafted GZIP archive. This is due to GzipSource not
handling an exception that might be raised when parsing a malformed gzip buffer.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://jira.atlassian.com/browse/CONFSERVER-93623");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Atlassian Confluence version 7.19.17, 8.5.4, 8.6.2 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-3635");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/01/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/16");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:atlassian:confluence");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("confluence_detect.nasl", "confluence_nix_installed.nbin", "confluence_win_installed.nbin");
  script_require_keys("installed_sw/Atlassian Confluence");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::combined_get_app_info(app:'Atlassian Confluence');

var constraints = [
  { 'min_version' : '7.19.13', 'fixed_version' : '7.19.17'},
  { 'min_version' : '8.0.0', 'fixed_version' : '8.4.5', 'fixed_display' : '8.5.4' },
  { 'min_version' : '8.5.0', 'fixed_version' : '8.5.4' },
  { 'min_version' : '8.6.0', 'fixed_version' : '8.6.2' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);
VendorProductVersionCPE
atlassianconfluencecpe:/a:atlassian:confluence

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.8%