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
AI Score
Confidence
High
EPSS
Percentile
42.7%
On affected platforms running Arista EOS with SNMP configured and the snmpd process is running, a specially crafted SNMP packet can cause a memory leak in the snmpd process. This may result in the snmpd processing being terminated (causing SNMP requests to time out until snmpd is automatically restarted) and potential memory resource exhaustion for other processes on the switch. The vulnerability does not have any confidentiality or integrity impacts to the system.
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(179045);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/18");
script_cve_id("CVE-2023-24511");
script_name(english:"Arista Networks EOS Memory Exhaustion (SA0084)");
script_set_attribute(attribute:"synopsis", value:
"The version of Arista Networks EOS running on the remote device is affected by a memory exhaustion vulnerability.");
script_set_attribute(attribute:"description", value:
"On affected platforms running Arista EOS with SNMP configured and the snmpd process is running, a specially
crafted SNMP packet can cause a memory leak in the snmpd process. This may result in the snmpd processing
being terminated (causing SNMP requests to time out until snmpd is automatically restarted) and potential
memory resource exhaustion for other processes on the switch. The vulnerability does not have any
confidentiality or integrity impacts to the system.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported
version number.");
# https://www.arista.com/en/support/advisories-notices/security-advisory/17239-security-advisory-0084
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bec03fda");
script_set_attribute(attribute:"solution", value:
"Apply the patch or upgrade to a fixed version as referenced in the vendor advisory.");
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-2023-24511");
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:"2023/04/11");
script_set_attribute(attribute:"patch_publication_date", value:"2023/04/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/31");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/o:arista:eos");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("arista_eos_detect.nbin");
script_require_keys("Host/Arista-EOS/Version", "Host/Arista-EOS/model", "Settings/ParanoidReport");
exit(0);
}
include('arista_eos_func.inc');
include('audit.inc');
if (report_paranoia < 2)
audit(AUDIT_PARANOID);
var version = get_kb_item_or_exit('Host/Arista-EOS/Version');
var model = toupper(get_kb_item_or_exit('Host/Arista-EOS/model'));
if (model !~ ".*70(1|2|5|6)0.*" &&
model !~ ".*71(3|5|6|7)0.*" &&
model !~ ".*72(0|2|50|60|80).*" &&
model !~ ".*73(00|20|58|68|88).*" &&
model !~ ".*7(5|80)0.*")
audit(AUDIT_HOST_NOT, 'an affected model');
var ext='SecurityAdvisoryKabruHotfix.rpm';
var sha='da2bc1fd2c7fc718e3c72c7ce83dc1caa05150cbe2f081c8cc3ed40ce787f7e24dff5202e621ef5f2af89f72afd25f7476d02f722ffe8e8c7d24c101cbbfe0e5';
if(eos_extension_installed(ext:ext, sha:sha))
audit(AUDIT_HOST_NOT, 'affected as a relevant hotfix has been installed');
var vmatrix = make_array();
vmatrix['F'] = make_list('4.29.0<=4.29.1');
vmatrix['M'] = make_list('4.28.0<=4.28.5.1',
'4.27.0<=4.27.8.1',
'4.26.0<=4.26.9',
'4.25.0<=4.25.10',
'4.24.0<=4.24.11');
vmatrix['fix'] = '4.26.10M / 4.27.9M / 4.28.6M / 4.29.2F';
# Check if SNMP Service is enabled
var snmp_service_chk = eos_snmp_service();
var kb_snmp_service = get_kb_item('Host/Arista-EOS/show snmp enabled');
if (!kb_snmp_service)
audit(AUDIT_HOST_NOT, 'affected as the SNMP Service is not enabled');
if (eos_is_affected(vmatrix:vmatrix, version:version))
security_report_v4(severity:SECURITY_HOLE, port:0, extra:eos_report_get());
else
audit(AUDIT_INST_VER_NOT_VULN, 'Arista Networks EOS', version);
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
AI Score
Confidence
High
EPSS
Percentile
42.7%