Security features bypass in Multiple Cisco Products

1) Security features bypass

EUVDB-ID: #VU52752

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-1495

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass a configured file policy for HTTP. 

The vulnerability exists due to incorrect handling of specific HTTP header parameters. A remote attacker can send specially crafted HTTP packets to bypass a configured file policy for HTTP packets and deliver a malicious payload. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Firepower Threat Defense (FTD): - - 6.7.0

Cisco UTD Snort IPS Engine Software for IOS XE: - - 17.4

Cisco UTD Engine for IOS XE SD-WAN: - - 17.4

Open Source Snort 2: All versions

Integrated Services Virtual Routers: All versions

Cloud Services Router 1000V Series: All versions

Catalyst 8500L Series Edge Platforms: All versions

Catalyst 8300 Series Edge Platforms: All versions

Catalyst 8200 Series Edge Platforms: All versions

Catalyst 8000V Edge Software: All versions

4000 Series Integrated Services Routers: All versions

3000 Series Industrial Security Appliance (ISA): All versions

Cisco 1000 Series Integrated Services Routers: All versions

Snort: before 2.9.17.1

CPE2.3

• cpe:2.3:h:cisco_systems:cisco_ftd:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.2.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.2.3:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.3.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.4.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.5.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.6.0:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:6.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_utd_snort_ips_engine_software_for_ios_xe:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_utd_snort_ips_engine_software_for_ios_xe:16.12:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_utd_engine_for_ios_xe_sd-wan:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:open_source_snort_2:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:integrated_services_virtual_routers:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cloud_services_router_1000v_series:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:catalyst_8500l_series_edge_platforms:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:catalyst_8300_series_edge_platforms:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:catalyst_8200_series_edge_platforms:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:catalyst_8000v_edge_software:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:4000_series_integrated_services_routers:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:3000_series_industrial_security_appliance_isa:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_1000_series_integrated_services_routers:*:*:*:*:*:*:*:*
• cpe:2.3:a:sourcefire:snort:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.