Vulnerabilities (CVE)

Filtered by vendor Nlnetlabs Subscribe
Filtered by product Unbound
Total 28 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2014-8602 3 Canonical, Debian, Nlnetlabs 3 Ubuntu Linux, Debian Linux, Unbound 2024-11-21 4.3 MEDIUM N/A
iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.
CVE-2011-1922 1 Nlnetlabs 1 Unbound 2024-11-21 4.3 MEDIUM N/A
daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted DNS request that triggers improper error handling.
CVE-2010-0969 1 Nlnetlabs 1 Unbound 2024-11-21 5.0 MEDIUM N/A
Unbound before 1.4.3 does not properly align structures on 64-bit platforms, which allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors.
CVE-2009-4008 1 Nlnetlabs 1 Unbound 2024-11-21 5.0 MEDIUM N/A
Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.
CVE-2009-3602 1 Nlnetlabs 1 Unbound 2024-11-21 7.5 HIGH N/A
Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.
CVE-2019-25042 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25041 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 5.0 MEDIUM 7.5 HIGH
Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25040 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 5.0 MEDIUM 7.5 HIGH
Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25039 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25038 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an integer overflow in a size calculation in dnscrypt/dnscrypt.c. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25037 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 5.0 MEDIUM 7.5 HIGH
Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25036 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 5.0 MEDIUM 7.5 HIGH
Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25035 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25034 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25033 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25032 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 7.5 HIGH 9.8 CRITICAL
Unbound before 1.9.5 allows an integer overflow in the regional allocator via regional_alloc. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
CVE-2019-25031 2 Debian, Nlnetlabs 2 Debian Linux, Unbound 2024-08-05 4.3 MEDIUM 5.9 MEDIUM
Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from the community that facilitates automatic configuration creation. It is not part of the Unbound installation
CVE-2023-50387 8 Fedoraproject, Isc, Microsoft and 5 more 13 Fedora, Bind, Windows Server 2008 and 10 more 2024-06-10 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-2022-30699 2 Fedoraproject, Nlnetlabs 2 Fedora, Unbound 2024-02-28 N/A 6.5 MEDIUM
NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten.
CVE-2022-30698 2 Fedoraproject, Nlnetlabs 2 Fedora, Unbound 2024-02-28 N/A 6.5 MEDIUM
NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.