F5 BIG-IP - SSL/TLS RC4 vulnerability CVE-2015-2808

# SPDX-FileCopyrightText: 2015 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

CPE = "cpe:/h:f5:big-ip";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105368");
  script_cve_id("CVE-2015-2808");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_version("2026-04-24T06:23:04+0000");

  script_name("F5 BIG-IP - SSL/TLS RC4 vulnerability CVE-2015-2808");

  script_xref(name:"URL", value:"https://my.f5.com/manage/s/article/K16864");

  script_tag(name:"impact", value:"Remote attackers may be able to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic.");

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

  script_tag(name:"insight", value:"The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic that occasionally relies on keys affected by the Invariance Weakness, and then using a brute-force approach involving LSB values, aka the 'Bar Mitzvah' issue. (CVE-2015-2808)");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_tag(name:"summary", value:"The remote host is missing a security patch.");

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

  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2015-09-18 15:48:23 +0200 (Fri, 18 Sep 2015)");
  script_category(ACT_GATHER_INFO);
  script_family("F5 Local Security Checks");
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_dependencies("gb_f5_big_ip_ssh_login_detect.nasl");
  script_mandatory_keys("f5/big_ip/version", "f5/big_ip/active_modules");
  exit(0);
}

include("f5.inc");
include("host_details.inc");
include("list_array_func.inc");
include("version_func.inc");

if (!version = get_app_version(cpe: CPE, service: "ssh-login"))
  exit(0);

check_f5["LTM"] = make_array("affected",   "11.0.0-11.5.3;10.1.0-10.2.4;",
                             "unaffected", "11.6.0;");

check_f5["AAM"] = make_array("affected",   "11.4.0-11.5.3;",
                             "unaffected", "11.6.0;");

check_f5["AFM"] = make_array("affected",   "11.3.0-11.5.3;",
                             "unaffected", "11.6.0;");

check_f5["AVR"] = make_array("affected",   "11.0.0-11.5.3;",
                             "unaffected", "11.6.0;");

check_f5["APM"] = make_array("affected",   "11.0.0-11.5.3;10.1.0-10.2.4;",
                             "unaffected", "11.6.0;");

check_f5["ASM"] = make_array("affected",   "11.0.0-11.5.3;10.1.0-10.2.4;",
                             "unaffected", "11.6.0;");

check_f5["GTM"] = make_array("affected",   "11.0.0-11.5.3;10.1.0-10.2.4;",
                             "unaffected", "11.6.0;");

check_f5["LC"]  = make_array("affected",   "11.0.0-11.5.3;10.1.0-10.2.4;",
                             "unaffected", "11.6.0;");

check_f5["PEM"] = make_array("affected",   "11.3.0-11.5.3;",
                             "unaffected", "11.6.0;");

if (report = f5_is_vulnerable(ca: check_f5, version: version)) {
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);