Vulnerabilities (CVE)

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Filtered by vendor Snort Subscribe
Filtered by product Snort
Total 18 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-40114 2 Cisco, Snort 4 Firepower Management Center, Firepower Threat Defense, Unified Threat Defense and 1 more 2023-02-18 7.8 HIGH 7.5 HIGH
Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.
CVE-2020-3299 2 Cisco, Snort 16 1100-4p, 1100-8p, 1101-4p and 13 more 2023-02-18 5.0 MEDIUM 5.8 MEDIUM
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerability is due to incorrect detection of modified HTTP packets used in chunked responses. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured File Policy for HTTP packets and deliver a malicious payload.
CVE-2021-1223 2 Cisco, Snort 19 Csr 1000v, Firepower Management Center, Firepower Threat Defense and 16 more 2023-02-18 5.0 MEDIUM 7.5 HIGH
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of an HTTP range header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
CVE-2021-1495 2 Cisco, Snort 22 C8200-1n-4t, C8200l-1n-4t, Catalyst 8300-1n1s-4t2x and 19 more 2023-02-18 5.0 MEDIUM 5.3 MEDIUM
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.
CVE-2021-1236 2 Cisco, Snort 19 Csr 1000v, Firepower Management Center, Firepower Threat Defense and 16 more 2023-02-18 5.0 MEDIUM 5.3 MEDIUM
Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.
CVE-2021-1224 2 Cisco, Snort 43 Csr 1000v, Firepower Management Center, Firepower Threat Defense and 40 more 2023-02-18 5.0 MEDIUM 5.3 MEDIUM
Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect detection of the HTTP payload if it is contained at least partially within the TFO connection handshake. An attacker could exploit this vulnerability by sending crafted TFO packets with an HTTP payload through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
CVE-2021-40116 2 Cisco, Snort 3 Firepower Management Center, Firepower Threat Defense, Snort 2021-10-29 7.1 HIGH 7.5 HIGH
Multiple Cisco products are affected by a vulnerability in Snort rules that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.The vulnerability is due to improper handling of the Block with Reset or Interactive Block with Reset actions if a rule is configured without proper constraints. An attacker could exploit this vulnerability by sending a crafted IP packet to the affected device. A successful exploit could allow the attacker to cause through traffic to be dropped. Note: Only products with Snort3 configured and either a rule with Block with Reset or Interactive Block with Reset actions configured are vulnerable. Products configured with Snort2 are not vulnerable.
CVE-2006-5276 2 Snort, Sourcefire 2 Snort, Intrusion Sensor 2018-10-17 10.0 HIGH N/A
Stack-based buffer overflow in the DCE/RPC preprocessor in Snort before 2.6.1.3, and 2.7 before beta 2; and Sourcefire Intrusion Sensor; allows remote attackers to execute arbitrary code via crafted SMB traffic.
CVE-2007-0251 1 Snort 1 Snort 2018-10-16 7.8 HIGH N/A
Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.
CVE-2016-1417 1 Snort 1 Snort 2018-10-09 6.8 MEDIUM 8.8 HIGH
Untrusted search path vulnerability in Snort 2.9.7.0-WIN32 allows remote attackers to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse tcapi.dll that is located in the same folder on a remote file share as a pcap file that is being processed.
CVE-2007-1398 2 Linux, Snort 2 Linux Kernel, Snort 2017-10-10 7.1 HIGH N/A
The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet.
CVE-2009-3641 1 Snort 1 Snort 2017-08-16 4.3 MEDIUM N/A
Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted IPv6 packet that uses the (1) TCP or (2) ICMP protocol.
CVE-2008-1804 1 Snort 1 Snort 2017-08-07 6.8 MEDIUM N/A
preprocessors/spp_frag3.c in Sourcefire Snort before 2.8.1 does not properly identify packet fragments that have dissimilar TTL values, which allows remote attackers to bypass detection rules by using a different TTL for each fragment.
CVE-2006-6931 1 Snort 1 Snort 2017-07-28 5.0 MEDIUM N/A
Algorithmic complexity vulnerability in Snort before 2.6.1, during predicate evaluation in rule matching for certain rules, allows remote attackers to cause a denial of service (CPU consumption and detection outage) via crafted network traffic, aka a "backtracking attack."
CVE-2003-0033 1 Snort 1 Snort 2016-10-17 10.0 HIGH N/A
Buffer overflow in the RPC preprocessor for Snort 1.8 and 1.9.x before 1.9.1 allows remote attackers to execute arbitrary code via fragmented RPC packets.
CVE-2001-0669 4 Cisco, Enterasys, Iss and 1 more 6 Catalyst 6000 Intrusion Detection System Module, Secure Intrusion Detection System, Dragon and 3 more 2016-10-17 7.5 HIGH N/A
Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection System, (2) Cisco Catalyst 6000 Intrusion Detection System Module, (3) Dragon Sensor 4.x, (4) Snort before 1.8.1, (5) ISS RealSecure Network Sensor 5.x and 6.x before XPU 3.2, and (6) ISS RealSecure Server Sensor 5.5 and 6.0 for Windows, allow remote attackers to evade detection of HTTP attacks via non-standard "%u" Unicode encoding of ASCII characters in the requested URL.
CVE-2001-1558 1 Snort 1 Snort 2008-09-05 5.0 MEDIUM N/A
Unknown vulnerability in IP defragmenter (frag2) in Snort before 1.8.3 allows attackers to cause a denial of service (crash).
CVE-2000-1226 1 Snort 1 Snort 2008-09-05 5.0 MEDIUM N/A
Snort 1.6, when running in straight ASCII packet logging mode or IDS mode with straight decoded ASCII packet logging selected, allows remote attackers to cause a denial of service (crash) by sending non-IP protocols that Snort does not know about, as demonstrated by an nmap protocol scan.