According to its self-reported version number, the installation of Quagga’s BGP daemon listening on the remote host is affected by a denial of service vulnerability. Unauthenticated attackers on the local network can trigger this issue by leveraging a BGP peering relationship and sending a malformed Outbound Route Filtering capability TLV in an OPEN message.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(59792);
script_version("1.6");
script_cvs_date("Date: 2018/07/25 18:58:04");
script_cve_id("CVE-2012-1820");
script_bugtraq_id(53775);
script_xref(name:"CERT", value:"962587");
script_name(english:"Quagga < 0.99.21 BGP Denial of Service Vulnerability");
script_summary(english:"Check the version of Quagga");
script_set_attribute(attribute:"synopsis", value:
"The remote service may be affected by a denial of service
vulnerability.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the installation of
Quagga's BGP daemon listening on the remote host is affected by a
denial of service vulnerability. Unauthenticated attackers on the
local network can trigger this issue by leveraging a BGP peering
relationship and sending a malformed Outbound Route Filtering
capability TLV in an OPEN message.");
script_set_attribute(attribute:"solution", value:
"Upgrade to version 0.99.21 or later.");
script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"see_also", value:"http://savannah.nongnu.org/forum/forum.php?forum_id=7214");
script_set_attribute(attribute:"see_also", value:"http://www.quagga.net/download/quagga-0.99.21.changelog.txt");
script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/03");
script_set_attribute(attribute:"patch_publication_date", value:"2012/05/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/29");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:quagga:quagga");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");
script_dependencies("quagga_zebra_detect.nasl");
script_require_keys("Quagga/Installed", "Settings/ParanoidReport");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
app = "Quagga Zebra";
kb = "Quagga/";
if (report_paranoia < 2)
audit(AUDIT_PARANOID);
port = get_kb_item_or_exit(kb + "Installed");
kb += port + "/";
banner = get_kb_item_or_exit(kb + "Banner");
ver = get_kb_item_or_exit(kb + "Version");
if (ver !~ "^\d+(\.\d+)*$")
audit(AUDIT_NONNUMERIC_VER, app, port, ver);
fix = "0.99.21";
if (ver_compare(ver:ver, fix:fix, strict:TRUE) >= 0)
audit(AUDIT_LISTEN_NOT_VULN, app, port, ver);
report = NULL;
if (report_verbosity > 0)
{
report =
'\n Version source : ' + banner +
'\n Installed version : ' + ver +
'\n Fixed version : ' + fix +
'\n';
}
security_note(port:port, extra:report);