Filtered by vendor Isc
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Total
227 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2022-2881 | 1 Isc | 1 Bind | 2025-05-28 | N/A | 8.2 HIGH |
| The underlying bug might cause read past end of the buffer and either read memory it should not read, or crash the process. | |||||
| CVE-2022-38177 | 4 Debian, Fedoraproject, Isc and 1 more | 4 Debian Linux, Fedora, Bind and 1 more | 2025-05-28 | N/A | 7.5 HIGH |
| By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources. | |||||
| CVE-2022-38178 | 4 Debian, Fedoraproject, Isc and 1 more | 4 Debian Linux, Fedora, Bind and 1 more | 2025-05-28 | N/A | 7.5 HIGH |
| By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources. | |||||
| CVE-2022-2906 | 1 Isc | 1 Bind | 2025-05-28 | N/A | 7.5 HIGH |
| An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service. | |||||
| CVE-2023-50387 | 8 Fedoraproject, Isc, Microsoft and 5 more | 13 Fedora, Bind, Windows Server 2008 and 10 more | 2025-05-12 | N/A | 7.5 HIGH |
| Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records. | |||||
| CVE-2018-5733 | 4 Canonical, Debian, Isc and 1 more | 8 Ubuntu Linux, Debian Linux, Dhcp and 5 more | 2025-04-25 | 5.0 MEDIUM | 7.5 HIGH |
| A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0. | |||||
| CVE-2019-6470 | 3 Isc, Opensuse, Redhat | 19 Dhcpd, Leap, Enterprise Linux and 16 more | 2025-04-11 | 5.0 MEDIUM | 7.5 HIGH |
| There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation. | |||||
| CVE-2022-3736 | 1 Isc | 1 Bind | 2025-04-01 | N/A | 7.5 HIGH |
| BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1. | |||||
| CVE-2022-3488 | 1 Isc | 1 Bind | 2025-04-01 | N/A | 7.5 HIGH |
| Processing of repeated responses to the same query, where both responses contain ECS pseudo-options, but where the first is broken in some way, can cause BIND to exit with an assertion failure. 'Broken' in this context is anything that would cause the resolver to reject the query response, such as a mismatch between query and answer name. This issue affects BIND 9 versions 9.11.4-S1 through 9.11.37-S1 and 9.16.8-S1 through 9.16.36-S1. | |||||
| CVE-2022-3094 | 1 Isc | 1 Bind | 2025-04-01 | N/A | 7.5 HIGH |
| Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and earlier branches are also affected, but through exhaustion of internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers. Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1. | |||||
| CVE-2022-3924 | 1 Isc | 1 Bind | 2025-03-31 | N/A | 7.5 HIGH |
| This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1. | |||||
| CVE-2023-5679 | 3 Fedoraproject, Isc, Netapp | 3 Fedora, Bind, Active Iq Unified Manager | 2025-03-29 | N/A | N/A |
| A bad interaction between DNS64 and serve-stale may cause `named` to crash with an assertion failure during recursive resolution, when both of these features are enabled. This issue affects BIND 9 versions 9.16.12 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.12-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. | |||||
| CVE-2024-28872 | 1 Isc | 1 Stork | 2025-03-26 | N/A | 8.1 HIGH |
| The TLS certificate validation code is flawed. An attacker can obtain a TLS certificate from the Stork server and use it to connect to the Stork agent. Once this connection is established with the valid certificate, the attacker can send malicious commands to a monitored service (Kea or BIND 9), possibly resulting in confidential data loss and/or denial of service. It should be noted that this vulnerability is not related to BIND 9 or Kea directly, and only customers using the Stork management tool are potentially affected. This issue affects Stork versions 0.15.0 through 1.15.0. | |||||
| CVE-2023-4408 | 3 Fedoraproject, Isc, Netapp | 3 Fedora, Bind, Ontap | 2025-03-14 | N/A | N/A |
| The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. | |||||
| CVE-2022-2795 | 3 Debian, Fedoraproject, Isc | 3 Debian Linux, Fedora, Bind | 2024-11-29 | N/A | 5.3 MEDIUM |
| By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. | |||||
| CVE-2023-6516 | 2 Isc, Netapp | 2 Bind, Active Iq Unified Manager | 2024-10-22 | N/A | 7.5 HIGH |
| To keep its cache database efficient, `named` running as a recursive resolver occasionally attempts to clean up the database. It uses several methods, including some that are asynchronous: a small chunk of memory pointing to the cache element that can be cleaned up is first allocated and then queued for later processing. It was discovered that if the resolver is continuously processing query patterns triggering this type of cache-database maintenance, `named` may not be able to handle the cleanup events in a timely manner. This in turn enables the list of queued cleanup events to grow infinitely large over time, allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.16.0 through 9.16.45 and 9.16.8-S1 through 9.16.45-S1. | |||||
| CVE-2023-5517 | 3 Fedoraproject, Isc, Netapp | 3 Fedora, Bind, Active Iq Unified Manager | 2024-10-22 | N/A | 7.5 HIGH |
| A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect <domain>;` is configured, and - the resolver receives a PTR query for an RFC 1918 address that would normally result in an authoritative NXDOMAIN response. This issue affects BIND 9 versions 9.12.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. | |||||
| CVE-2023-5680 | 2 Isc, Netapp | 2 Bind, Active Iq Unified Manager | 2024-10-22 | N/A | 5.3 MEDIUM |
| If a resolver cache has a very large number of ECS records stored for the same name, the process of cleaning the cache database node for this name can significantly impair query performance. This issue affects BIND 9 versions 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. | |||||
| CVE-1999-0043 | 6 Bsdi, Caldera, Isc and 3 more | 7 Bsd Os, Openlinux, Inn and 4 more | 2024-08-01 | 10.0 HIGH | N/A |
| Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and "rmgroup" control messages, and others. | |||||
| CVE-2022-3080 | 2 Fedoraproject, Isc | 2 Fedora, Bind | 2024-07-03 | N/A | 7.5 HIGH |
| By sending specific queries to the resolver, an attacker can cause named to crash. | |||||