Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.
An attacker with basic CRUD permissions on a replicated collection can run the applyOps command with specially malformed oplog entries, resulting in a potential denial of service on secondaries. This issue affects MongoDB Server v4.0 versions prior to 4.0.27; MongoDB Server v4.2 versions prior to 4.2.16; MongoDB Server v4.4 versions prior to 4.4.9.
A flaw was found in Red Hat Ceph before 0.94.9-8. The way Ceph Object Gateway handles POST object requests permits an authenticated attacker to launch a denial of service attack by sending null or specially crafted POST object requests.
A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. An attacker could exploit this vulnerability by entering unexpected characters during a valid authentication. A successful exploit could allow the attacker to crash the web server on the device, which must be manually recovered by disabling and re-enabling the web server.
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Replication). Supported versions that are affected are 5.7.16 and earlier. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS v3.0 Base Score 6.5 (Availability impacts).
The class file parser in IBM Java 1.4.2 SR13 FP9 allows remote authenticated users to cause a denial of service (memory consumption or an infinite loop) via a crafted attribute length field in a class file, related to validation of a length field at the wrong time, a different vulnerability than CVE-2011-0311.
lib/rfc1035.c in Squid 2.x, 3.0 through 3.0.STABLE22, and 3.1 through 3.1.0.15 allows remote attackers to cause a denial of service (assertion failure) via a crafted DNS packet that only contains a header.
A flaw was found in the way Ceph Object Gateway would process cross-origin HTTP requests if the CORS policy was set to allow origin on a bucket. A remote unauthenticated attacker could use this flaw to cause denial of service by sending a specially-crafted cross-origin HTTP request. Ceph branches 1.3.x and 2.x are affected.
A vulnerability was found in Openstack Glance. No limits are enforced within the Glance image service for both v1 and v2 `/images` API POST method for authenticated users, resulting in possible denial of service attacks through database table saturation.
Huawei USG9520, USG9560, and USG9580 unified security gateways with software before V300R001C01SPCa00 allow remote authenticated users to cause a denial of service (device restart) via an unspecified command parameter.
Huawei AC6003, AC6005, AC6605, and ACU2 access controllers with software before V200R006C10SPC200 allows remote authenticated users to cause a denial of service (device restart) via crafted CAPWAP packets.
Huawei AnyOffice V200R006C00 could allow an authenticated, remote attacker to cause the software to deny services by uploading an XML bomb.
An issue was discovered in phpMyAdmin. An authorized user can cause a denial-of-service (DoS) attack on a server by passing large values to a loop. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
An issue was discovered in phpMyAdmin. An authenticated user can trigger a denial-of-service (DoS) attack by entering a very long password at the change password dialog. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
A Denial of Service vulnerability exists in the ITMS workflow process manager login window in Symantec IT Management Suite 8.0.
qpid-cpp 1.0 crashes when a large message is sent and the Digest-MD5 mechanism with a security layer is in use .
Xerver 4.32 allows remote authenticated users to cause a denial of service (daemon crash) via a non-numeric web port assignment in the management interface. NOTE: this can be leveraged by non-authenticated attackers using CVE-2009-4657.
The policy definition evaluator in Condor before 7.4.2 does not properly handle attributes in a WANT_SUSPEND policy that evaluate to an UNDEFINED state, which allows remote authenticated users to cause a denial of service (condor_startd exit) via a crafted job.
A malformed input file can lead to a segfault due to an out of bounds array access in raptor_xml_writer_start_element_common.
A DOS vulnerability exists in Gitlab CE/EE >=10.3, <13.4.7,>=13.5, <13.5.5,>=13.6, <13.6.2 that allows an attacker to trigger uncontrolled resource by bypassing input validation in markdown fields.
TYPSoft FTP Server 1.11 allows remote attackers to cause a denial of service (CPU consumption) by sending an ABOR (abort) command without an active file transfer.
The ftp_QUIT function in ftpserver.py in pyftpdlib before 0.5.0 allows remote authenticated users to cause a denial of service (file descriptor exhaustion and daemon outage) by sending a QUIT command during a disallowed data-transfer attempt.
IBM Tivoli Directory Server (TDS) 5.2 before 5.2.0.5-TIV-ITDS-LA0007 does not properly handle the simultaneous changing of multiple passwords, which makes it easier for remote authenticated users to cause a denial of service (DB2 daemon deadlock) by making password changes that trigger updates to a DB2 password-history table.
Open Ticket Request System (OTRS) before 3.0.0-beta7 does not properly restrict the ticket ages that are within the scope of a search, which allows remote authenticated users to cause a denial of service (daemon hang) via a fulltext search.
IBM Tivoli Directory Server (TDS) 6.0 before 6.0.0.62 (aka 6.0.0.8-TIV-ITDS-IF0004) does not perform certain locking of linked-list access, which allows remote authenticated users to cause a denial of service (daemon crash) via a paged search.
Serv-U 7.0.0.1 through 7.3, including 7.2.0.1, allows remote authenticated users to cause a denial of service (CPU consumption) via a crafted stou command, probably related to MS-DOS device names, as demonstrated using "con:1".
The IMAP server in Softalk Mail Server (formerly WorkgroupMail) 8.5.1.431 allows remote authenticated users to cause a denial of service (resource consumption and daemon crash) via a long IMAP APPEND command with certain repeated parameters.
Discourse is an open source platform for community discussion. In affected versions admins users can trigger a Denial of Service attack via the `/message-bus/_diagnostics` path. The impact of this vulnerability is greater on multisite Discourse instances (where multiple forums are served from a single application server) where any admin user on any of the forums are able to visit the `/message-bus/_diagnostics` path. The problem has been patched. Please upgrade to 2.8.0.beta10 or 2.7.12. No workarounds for this issue exist.
Snudown is a reddit-specific fork of the Sundown Markdown parser used by GitHub, with Python integration added. In affected versions snudown was found to be vulnerable to denial of service attacks to its reference table implementation. References written in markdown ` [reference_name]: https://www.example.com` are inserted into a hash table which was found to have a weak hash function, meaning that an attacker can reliably generate a large number of collisions for it. This makes the hash table vulnerable to a hash-collision DoS attack, a type of algorithmic complexity attack. Further the hash table allowed for duplicate entries resulting in long retrieval times. Proofs of concept and further discussion of the hash collision issue are discussed on the snudown GHSA(https://github.com/reddit/snudown/security/advisories/GHSA-6gvv-9q92-w5f6). Users are advised to update to version 1.7.0.
OSIsoft PI SQL Data Access Server (aka OLE DB) 2016 1.5 allows remote authenticated users to cause a denial of service (service outage and data loss) via a message.
Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on an object’s date attribute(s) allows an authenticated remote attacker with Object Modification privileges to insert an unexpected format into date fields, which leads to breaking the object page that the date field is present.
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a improper input validation vulnerability via the path parameter. An authenticated attacker can send a malformed POST request to achieve server-side denial of service.
An issue was discovered in COINS Construction Cloud 11.12. Due to insufficient input neutralization, it is vulnerable to denial of service attacks via forced server crashes.
Ability Mail Server before 2.61 allows remote authenticated users to cause a denial of service (daemon crash) via (1) malformed number list ranges in unspecified IMAP commands, and possibly (2) a blank string in unspecified messages.
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.
wire-ios is the iOS version of Wire, an open-source secure messaging app. In wire-ios versions 3.8.0 and prior, a vulnerability exists that can cause a denial of service between users. If a user has an invalid assetID for their profile picture and it contains the " character, it will cause the iOS client to crash. The vulnerability is patched in wire-ios version 3.8.1.
IBM Content Navigator 3.0.CD could allow a malicious user to cause a denial of service due to improper input validation. IBM X-Force ID: 200968.
Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.
GENIVI Diagnostic Log and Trace (DLT) provides a log and trace interface. In versions of GENIVI DLT between 2.10.0 and 2.18.6, a configuration file containing the special characters could cause a vulnerable component to crash. All the applications which are using the configuration file could fail to generate their dlt logs in system. As of time of publication, no patch exists. As a workaround, one may check the integrity of information in configuration file manually.
Sorin Chitu Telnet-FTP Server 1.0 allows remote authenticated users to cause a denial of service (crash) via consecutive RETR commands. NOTE: The provenance of this information is unknown; the details are obtained solely from third party information.
SAP Mobile Platform, version 3.0, does not sufficiently validate an XML document accepted from an untrusted source which could lead to partial denial of service. Since SAP Mobile Platform does not allow External-Entity resolving, there is no issue of leaking content of files on the server.
An input validation error was found in Red Hat Certificate System's handling of client provided certificates before 8.1.20-1. If the certreq field is not present in a certificate an assertion error is triggered causing a denial of service.
In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
A denial of service issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, macOS Catalina 10.15. An attacker in a privileged position may be able to perform a denial of service attack.
Cisco IOS Unified Border Element (CUBE) in Cisco IOS before 15.3(2)T allows remote authenticated users to cause a denial of service (input queue wedge) via a crafted series of RTCP packets, aka Bug ID CSCuc42518.
IBM Resilient SOAR V38.0 users may experience a denial of service of the SOAR Platform due to a insufficient input validation. IBM X-Force ID: 165589.
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation mechanisms for certain fields in HTTP/HTTPS requests sent through an affected device. A successful attacker could exploit this vulnerability by sending a malicious HTTP/HTTPS request through an affected device. An exploit could allow the attacker to force the device to stop processing traffic, resulting in a DoS condition.
In Octopus Deploy before 2019.10.6, an authenticated user with TeamEdit permission could send a malformed Team API request that bypasses input validation and causes an application level denial of service condition. (The fix for this was also backported to LTS 2019.9.8 and LTS 2019.6.14.)
ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.
A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process.