Vulnerabilities (CVE)

Filtered by vendor Isc Subscribe
Total 227 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2001-0011 1 Isc 1 Bind 2025-04-03 10.0 HIGH N/A
Buffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
CVE-2002-0400 1 Isc 1 Bind 2025-04-03 5.0 MEDIUM N/A
ISC BIND 9 before 9.2.1 allows remote attackers to cause a denial of service (shutdown) via a malformed DNS packet that triggers an error condition that is not properly handled when the rdataset parameter to the dns_message_findtype() function in message.c is not NULL, aka DoS_findtype.
CVE-1999-0785 1 Isc 1 Inn 2025-04-03 7.2 HIGH N/A
The INN inndstart program allows local users to gain root privileges via the "pathrun" parameter in the inn.conf file.
CVE-2001-0497 1 Isc 1 Bind 2025-04-03 4.6 MEDIUM 7.8 HIGH
dnskeygen in BIND 8.2.4 and earlier, and dnssec-keygen in BIND 9.1.2 and earlier, set insecure permissions for a HMAC-MD5 shared secret key file used for DNS Transactional Signatures (TSIG), which allows attackers to obtain the keys and perform dynamic DNS updates.
CVE-2005-0033 1 Isc 1 Bind 2025-04-03 5.0 MEDIUM N/A
Buffer overflow in the code for recursion and glue fetching in BIND 8.4.4 and 8.4.5 allows remote attackers to cause a denial of service (crash) via queries that trigger the overflow in the q_usedns array that tracks nameservers and addresses.
CVE-1999-0009 11 Bsdi, Caldera, Data General and 8 more 13 Bsd Os, Openlinux, Dg Ux and 10 more 2025-04-03 10.0 HIGH N/A
Inverse query buffer overflow in BIND 4.9 and BIND 8 Releases.
CVE-2002-0525 1 Isc 1 Inn 2025-04-03 10.0 HIGH N/A
Format string vulnerabilities in (1) inews or (2) rnews for INN 2.2.3 and earlier allow local users and remote malicious NNTP servers to gain privileges via format string specifiers in NTTP responses.
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 7.5 HIGH
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 8.9 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 7.5 HIGH
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 2024-11-21 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-2023-5680 2 Isc, Netapp 2 Bind, Active Iq Unified Manager 2024-11-21 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-2023-5517 3 Fedoraproject, Isc, Netapp 3 Fedora, Bind, Active Iq Unified Manager 2024-11-21 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-2023-50387 8 Fedoraproject, Isc, Microsoft and 5 more 13 Fedora, Bind, Windows Server 2008 and 10 more 2024-11-21 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-2023-4236 4 Debian, Fedoraproject, Isc and 1 more 13 Debian Linux, Fedora, Bind and 10 more 2024-11-21 N/A 7.5 HIGH
A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.