7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.024 Low
EPSS
Percentile
89.9%
According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected by a buffer overflow vulnerability, allowing a remote attacker to cause Denial of Service (DoS), and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
Note that Nessus has not tested for these issues but has instead relied only on the applicationβs self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(141474);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/25");
script_cve_id("CVE-2020-5135");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/05");
script_xref(name:"CEA-ID", value:"CEA-2020-0127");
script_name(english:"SonicWall SonicOS Buffer Overflow Vulnerability");
script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a Buffer Overflow vulnerability, leading to Denial of Service,
and potentially to Arbitrary Code Execution.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected
by a buffer overflow vulnerability, allowing a remote attacker to cause Denial of Service (DoS),
and potentially execute arbitrary code by sending a malicious request to the firewall.
This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v
and Gen 7 version 7.0.0.0.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0010
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c667b9f5");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in the vendor security advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-5135");
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:"2020/10/12");
script_set_attribute(attribute:"patch_publication_date", value:"2020/10/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/16");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/o:sonicwall:sonicos");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Firewalls");
script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("os_fingerprint.nasl");
script_require_keys("Host/OS");
exit(0);
}
os = get_kb_item_or_exit("Host/OS");
if (os !~ "^SonicOS" ) audit(AUDIT_OS_NOT, "SonicWall SonicOS");
# SonicOS Enhanced 6.0.5.3-94o on a SonicWALL NSA 220
match = pregmatch(pattern:"^SonicOS(?: Enhanced)? (([0-9.]+)(-[^ ]*)?) on a SonicWALL", string:os);
if (isnull(match)) exit(1, "Failed to identify the version of SonicOS.");
version = match[1];
fix = NULL;
if (version =~ "^6\.")
{
# SonicOS 6.0.5.3-93o and earlier
# fixex in SonicOS 6.0.5.3-94o
if (version =~ "^6\.0\.5\.3-([0-8]?[0-9]|9[0-3])o")
fix = "6.0.5.3-94o";
# SonicOS 6.5.1.11-4n and earlier
# fixed in SonicOS 6.5.1.12-1n
else if (version =~ "^6\.5\.1\.11-\d+n")
fix = "SonicOS 6.5.1.12-1n";
# SonicOS 6.5.4.7-79n and earlier
# fixed in SonicOS 6.5.4.7-83n
else if (version =~ "^6\.5\.4\.7-[0-7]?[0-9]n")
fix = "6.5.4.7-83n";
# SonicOSv 6.5.4.4-44v-21-794 and earlier
# fixed in SonicOS 6.5.4.v-21s-987
# XXX not sure how I can check for this version,
# as version and fix formats look different
#else if (version =~ "^6\.5\.4\.4")
# fix = "6.5.4.v-21s-987";
}
# SonicOS 7.0.0.0-1
# fixed in 7.0.0.0-2
else if (version =~ "^7\.0\.0\.0-[01]$")
{
fix = "7.0.0.0-2";
}
if (isnull(fix))
audit(AUDIT_DEVICE_NOT_VULN, "SonicWALL ", "SonicOS " + version);
#if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
else
{
port = 0;
report =
'\n Installed SonicOS version : ' + version +
'\n Fixed SonicOS version : ' + fix +
'\n';
security_report_v4(port:port, extra:report, severity:SECURITY_HOLE);
}
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.024 Low
EPSS
Percentile
89.9%