SILC Client < 1.1.8 Nickname Field Format String Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.900951");
  script_version("2025-01-21T05:37:33+0000");
  script_tag(name:"last_modification", value:"2025-01-21 05:37:33 +0000 (Tue, 21 Jan 2025)");
  script_tag(name:"creation_date", value:"2009-09-29 09:16:03 +0200 (Tue, 29 Sep 2009)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_cve_id("CVE-2009-3051");
  script_name("SILC Client < 1.1.8 Nickname Field Format String Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("General");
  script_dependencies("secpod_silc_prdts_detect.nasl");
  script_mandatory_keys("SILC/Client/Ver");

  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/2150");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/35940");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2009/09/03/5");

  script_tag(name:"summary", value:"SILC Client/Toolkit is prone to a format string vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"A format string error occurs in 'lib/silcclient/client_entry.c' while
  processing format string specifiers in the nickname field.");

  script_tag(name:"impact", value:"Attackers can exploit this iisue to execute arbitrary code in the
  context of the affected application and compromise the system.");

  script_tag(name:"affected", value:"SILC Client prior to 1.1.8

  SILC Toolkit prior to 1.1.10");

  script_tag(name:"solution", value:"Apply the patch or update to SILC Client version 1.1.8 or
  later.");

  script_tag(name:"qod_type", value:"executable_version");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

CPE = "cpe:/a:silcnet:silc_client";

include( "host_details.inc" );
include( "version_func.inc" );

if( ! vers = get_app_version( cpe: CPE ) )
  exit( 0 );

if( version_is_less( version: vers, test_version:"1.1.8" ) ) {
  report = report_fixed_ver( installed_version: vers, fixed_version: "1.1.8" );
  security_message( port: 0, data: report );
  exit( 0 );
}

exit( 99 );