CVE-2023-44487

CVE-2023-44487 – HTTP/2 Rapid Reset DoS Root cause: HTTP/2 stream resets can cause servers to continue processing, leading to unbounded resource consumption and potential DoS when clients rapidly cancel streams. What’s affected: Various HTTP/2 implementations and deployments, including servers, p...

CVE-2020-3580

Cisco ASA/FTD web services suffer XSS due to insufficient input validation in the web UI, allowing unauthenticated, remote attackers to induce script execution or access browser data via crafted links. Affected products include Cisco ASA and FTD with specific AnyConnect/WebVPN configurations. Imp...

CVE-2022-20759

Cisco ASA and Firepower Threat Defense (FTD) web services interface for remote access VPN features contains a privilege-escalation flaw due to improper separation of authentication and authorization scopes. An authenticated but unprivileged remote attacker can send crafted HTTPS requests to the w...

CVE-2021-1223

CVE-2021-1223 affects Cisco products with the Snort detection engine, where incorrect handling of HTTP range header (per Cisco/NVD wording) could allow an unauthenticated, remote attacker to bypass a configured HTTP file policy and deliver a malicious payload by sending crafted HTTP packets throu...

CVE-2022-20746

Cisco Firepower Threat Defense (FTD) Software TCP proxy can be DoSed by an unauthenticated, remote attacker via a crafted TCP stream due to improper handling of TCP flows. Impact is device reload leading to availability loss. Cisco and third-party advisories (Cisco Security Advisory, Nessus plugi...

CVE-2021-1224

CVE-2021-1224 affects Cisco products via a TCP Fast Open (TFO) related bypass of HTTP file policies when used with Snort. The vulnerability arises from incorrect detection of HTTP payloads that are partially contained in the TFO handshake, enabling an unauthenticated, remote attacker to deliver a...

CVE-2022-20757

Cisco Firepower Threat Defense (FTD) Software contains a DoS vulnerability where a high-rate UDP flood exploits improper traffic handling once platform limits are reached, causing all new connections to be dropped. This is an unauthenticated, remote attack described in multiple sources (Cisco adv...

CVE-2022-20715

The CVE-2022-20715 issue affects Cisco ASA and Cisco FTD remote access SSL VPN. Affected components are the remote access VPN error handling related to client connections; improper validation of errors could allow an unauthenticated, remote attacker to trigger a restart and DoS by sending crafted...

CVE-2022-20745

CVE-2022-20745 affects Cisco ASA (ASAs) and Cisco Firepower Threat Defense (FTD) web services interface for remote access VPN. Root cause: improper input validation when parsing HTTPS requests, allowing unauthenticated remote attackers to trigger a reload and DoS. Affected products include ASA/FT...

CVE-2022-20760

The CVE-2022-20760 entry concerns Cisco ASA Software and Firepower Threat Defense (FTD) DNS inspection handler. The vulnerability arises from improper processing of incoming DNS requests, enabling an unauthenticated, remote attacker to trigger a denial-of-service condition by sending crafted DNS ...

CVE-2022-20729

Cisco Firepower Threat Defense (FTD) Software CLI is affected by an XML injection vulnerability due to insufficient input validation in the command parser. An authenticated, local attacker could supply crafted input to inject XML, potentially causing unexpected command processing and output. Cisc...

CVE-2023-20107

Cisco CVE-2023-20107 affects Cisco ASA (5506-X, 5508-X, 5516-X) ASA Software and Cisco FTD Software due to insufficient entropy in the deterministic random bit generator (DRBG/PRNG) used for cryptographic key generation. The root cause is low entropy in DRBG on affected hardware, enabling an unau...

CVE-2022-20742

Cisco ASA Software and Firepower Threat Defense (FTD) Software contain an IPsec IKEv2 VPN information disclosure vulnerability (CVE-2022-20742) due to improper GCM cipher implementation. An unauthenticated, remote attacker in a man-in-the-middle position can intercept encrypted messages across an...

CVE-2021-40114

CVE-2021-40114 affects multiple Cisco products via the Snort detection engine’s ICMP processing, causing DoS from improper memory/resource management when handling ICMP packets. Root cause: memory/resource management flaw in ICMP packet processing. Impact: unauthenticated remote DoS, potentially ...

CVE-2022-20767

CVE-2022-20767 describes a DoS vulnerability in Cisco Firepower Threat Defense (FTD) software due to improper handling of the DNS reputation enforcement rule in the Snort 3 evaluation. An unauthenticated, remote attacker could send crafted UDP packets through an affected device to cause a buildup...

CVE-2020-3578

CVE-2020-3578 affects Cisco ASA and Cisco Firepower Threat Defense (FTD) web services interface. The issue is an insufficient validation of URLs in portal access rules, enabling an unauthenticated, remote attacker to bypass a configured access rule and reach parts of the WebVPN portal that should...

CVE-2020-3529

The CVE-2020-3529 issue affects Cisco ** ASA** and FTD software. It is a vulnerability in the SSL VPN negotiation process caused by inefficient direct memory access (DMA) memory management during SSL VPN negotiation. An unauthenticated, remote attacker could send a steady stream of crafted DTLS t...

CVE-2020-3582

CVE-2020-3582 involves multiple XSS vulnerabilities in the web services interface of Cisco ASA and Firepower Threat Defense (FTD) software. The root cause is insufficient validation of user-supplied input in the device’s web interface, allowing an unauthenticated, remote attacker to persuade a us...

CVE-2020-3528

CVE-2020-3528 describes a DoS vulnerability in the OSPFv2 implementation of Cisco ASA and Firepower Threat Defense (FTD) software. The issue arises from incomplete input validation when processing certain OSPFv2 packets with Link-Local Signaling (LLS) data, which could allow an unauthenticated, r...

CVE-2021-1493

CVE-2021-1493 targets Cisco ASA/FTD Web Services Buffer Overflow. The issue stems from insufficient boundary checks in the web services interface, allowing an authenticated remote attacker to send a crafted HTTP request to trigger a buffer overflow, which could disclose data fragments or cause a ...

CVE-2020-3572

CVE-2020-3572 is a memory-leak DoS in the SSL/TLS session handler of Cisco ASA and Firepower Threat Defense (FTD) software. The root cause is a memory leak when closing SSL/TLS connections in a specific state; an unauthenticated, remote attacker can exhaust device memory by creating and closing m...

CVE-2020-3583

CVE-2020-3583 describes cross-site scripting vulnerabilities in Cisco ASA/FTD Web Services interface due to insufficient validation of user input. A remote, unauthenticated attacker could entice a user to click a crafted link to execute arbitrary script in the interface context or access browser-...

CVE-2021-40117

CVE-2021-40117 affects Cisco ASA and Firepower Threat Defense (FTD) Software. The issue is in the SSL/TLS message handler where incoming packets are not properly processed, allowing an unauthenticated remote attacker to trigger a reload of the device and cause a denial-of-service (DoS). Exploitat...

CVE-2020-3581

CVE-2020-3581 covers multiple cross-site scripting (XSS) vulnerabilities in the web services interface of Cisco ASA and FTD software. The flaws arise from insufficient validation of user-supplied input in the web services interface, allowing an unauthenticated, remote attacker to persuade a user ...

CVE-2021-1236

CVE-2021-1236 affects multiple Cisco products via the Snort application detection engine. The vulnerability stems from a flaw in the detection algorithm, enabling an unauthenticated, remote attacker to bypass configured policies by sending crafted packets, potentially delivering a malicious paylo...

CVE-2020-3304

CVE-2020-3304 affects Cisco ASA and Firepower Threat Defense (FTD) web interfaces. The issue stems from improper HTTP input validation, allowing an unauthenticated, remote attacker to craft an HTTP request that can trigger a reload of the affected device, causing a DoS. Impact is limited to the w...

CVE-2019-1981

The CVE-2019-1981 vulnerability affects Cisco Firepower Threat Defense Software (FTD), Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software. It stems from insufficient normalization of text-based payloads, enabling an unauthenticated, remote attacker to bypass...

CVE-2020-3564

CVE-2020-3564 affects Cisco ASA/FTD FTP inspection engine. Root cause: ineffective flow tracking of FTP traffic allows an unauthenticated, remote attacker to bypass FTP inspection and complete FTP connections. Affected products include Cisco ASA Software and Cisco FTD Software. In practice, explo...

CVE-2020-3561

CVE-2020-3561 affects Cisco ASA/FTD WebVPN (Clientless SSL VPN). The issue is a result of improper input sanitization that enables unauthenticated, remote CRLF header injection when a user is lured to click a crafted link, allowing arbitrary HTTP headers to be injected and potential redirection. ...

CVE-2021-40118

CVE-2021-40118 affects Cisco ASA/FTD web services. The vulnerability arises from improper input validation when parsing HTTPS requests, allowing an unauthenticated, remote attacker to trigger a DoS condition by sending a malicious HTTPS request, potentially causing the device to reload. The issue...

CVE-2020-3315

CVE-2020-3315 affects multiple Cisco products via the Snort detection engine, where incorrect handling of certain HTTP responses lets unauthenticated remote attackers bypass configured file policies and deliver payloads. Public documentation in Debian/ Mageia advisories notes the vulnerability in...

CVE-2021-34793

CVE-2021-34793 is a DoS vulnerability in Cisco ASA/FTD software (transparent mode) due to improper handling of certain TCP segments by the TCP Normalizer, allowing an unauthenticated remote attacker to poison MAC address tables and disrupt networks. Affected products include Cisco ASA and Cisco F...

CVE-2019-1978

The CVE-2019-1978 issue affects Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software. It stems from improper stream reassembly in the stream reassembly component, allowing an unauthenticated, remote attacker to bypass f...

CVE-2020-3533

The CVE-2020-3533 issue affects Cisco Firepower Threat Defense (FTD) Software, targeting the SNMP input packet processor. Root cause: insufficient memory management protections under heavy SNMP polling loads. Attack scenario: unauthenticated, remote attacker sends a high rate of SNMP requests to ...

CVE-2019-12678

The CVE-2019-12678 issue affects Cisco ASA/FTD SIP inspection: an unauthenticated remote attacker can send malicious SIP packets to trigger an integer underflow in the SIP parsing module, causing the device to read unmapped memory and crash. Root cause: improper SIP message parsing in the SIP ins...

CVE-2022-20730

Cisco Firepower Threat Defense (FTD) is affected by CVE-2022-20730, a Security Intelligence DNS feed bypass vulnerability caused by incorrect feed update processing. An unauthenticated, remote attacker could bypass DNS feed protections and send blocked traffic through an affected device, potentia...

CVE-2020-3585

The CVE-2020-3585 issue affects Cisco ASA/FTD software for Cisco Firepower 1000 Series and is due to improper countermeasures against the Bleichenbacher RSA-TLS vulnerability in the TLS handler. An unauthenticated remote attacker could exploit crafted TLS messages to make the device act as an ora...

CVE-2019-12698

Cisco ASA Software and Cisco FTD WebVPN CPU Denial of Service (CVE-2019-12698) allows unauthenticated remote attackers to trigger high CPU by repeated WebVPN HTTP page requests, causing DoS. Affected ASA/FTD versions are mitigated by Cisco software updates; there are no supported workarounds per ...

CVE-2022-20751

Cisco Firepower Threat Defense (FTD) Software uses Snort integration that is vulnerable to unlimited memory consumption via crafted IP packets, leading to DoS. Affected component: Snort detection engine integration in FTD; root cause: insufficient memory management for certain Snort events, enabl...

CVE-2023-20071

Cisco CVE-2023-20071 affects the Snort detection engine’s FTP inspection module across multiple Cisco products (notably FTD/ASA family). An unauthenticated, network-accessible attacker can craft FTP traffic to bypass FTP inspection and potentially deliver a payload, per Cisco’s security advisory ...

CVE-2020-3352

CVE-2020-3352 affects Cisco Firepower Threat Defense (FTD) Software CLI, where undocumented configuration commands allow an authenticated, local attacker to access hidden commands and modify various device configurations that should not be exposed via CLI. The root cause is exposure of hidden/und...

CVE-2019-12695

CVE-2019-12695 affects Cisco ASA and Cisco Firepower Threat Defense (FTD) WebVPN portals. The issue arises from insufficient validation of user-supplied input in the web-based management interface, enabling an unauthenticated, remote attacker to lure a user into clicking a crafted link and execut...

CVE-2021-1495

CVE-2021-1495 affects Cisco Snort detection engine used in multiple Cisco products. The flaw arises from incorrect handling of specific HTTP header parameters, enabling an unauthenticated, remote attacker to bypass a configured HTTP File Policy by sending crafted HTTP packets, potentially deliver...

CVE-2020-3565

CVE-2020-3565 affects Cisco Firepower Threat Defense (FTD) Software. The TCP Intercept feature can be triggered when the embryonic connection limit is reached, causing the detection engine to misprocess packets. An unauthenticated, remote attacker could craft traffic that matches a policy with TC...

CVE-2021-34791

Cisco ASA and Firepower Threat Defense (FTD) software contain multiple ALG/NAT bypass vulnerabilities (NAT Slipstreaming) due to an incorrect implementation of security checks in the ALG/NAT handling, allowing unauthenticated remote actors to bypass the ALG and open unauthorized connections behin...

CVE-2020-3306

CVE-2020-3306 affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) DHCP module. The root cause is incorrect processing of certain DHCP packets, which an unauthenticated remote attacker can exploit by sending a crafted DHCP packet to cause an on-device denial of service. Public docu...

CVE-2020-3305

The CVE-2020-3305 issue affects Cisco ASA and Firepower Threat Defense (FTD) where the BGP module incorrectly processes certain BGP packets. An unauthenticated, remote attacker can craft BGP traffic to trigger a denial of service on the affected device. Multiple connected documents corroborate a ...

CVE-2018-0244

CVE-2018-0244 affects Cisco Firepower System Software's detection engine. A vulnerability in SMB handling during large file transfer failures lets an unauthenticated, remote attacker bypass a configured file action policy and drop SMB malware file transfers. The issue arises when pieces of a file...

CVE-2018-15388

The CVE-2018-15388 issue affects Cisco ASA and Cisco FTD WebVPN login functionality. Root cause: excessive processing load for existing WebVPN login operations leads to unauthenticated remote attackers sending multiple login requests, increasing CPU usage and causing a DoS. Documented impact: ele...

CVE-2019-1691

Cisco Firepower Threat Defense Software’s SNORT detection engine is affected by an SSL/TLS handshake handling issue that allows an unauthenticated remote attacker to trigger an unexpected restart, causing a partial DoS while the engine restarts. Affected are FTD versions prior to 6.2.3.4 due to i...