Vendor
NLnet Labs
98 known vulnerabilities.
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High 8.4
Krill treats a "local parent" as already-authenticated, letting a CA operator act as any child of any CA on the same server
When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492 provisioning exchange in-process and trusts the child identity (child_handle) that the caller put in the parent contact. Nothing ch…
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High 8.4
Krill users restricted to one CA can make any other CA delegate its prefixes and publish ROAs for them via bulk import
The vulnerability gives a role that is restricted to a list of CAs (cas = [...]) its full permission set for every request that is not tied to a CA, including the bulk import endpoint POST /api/v1/bulk/cas/import. It adds a new child CA under any existing CA,…
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High 8.4
Krill login-session tokens reuse their encryption nonce across restarts, so any user who can log in can forge an "admin" token
The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.
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High 7.5
Routinator may exit on malformed ranges
When parsing an AS range in Routinator, if the maximum value of the range is smaller than the minimum value of the range, Routinator will never reach the maximum value and run out of memory.
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High 7.5
Routinator exits on malformed rsync URIs
Routinator exits when an rsync URI for a file obtained over RRDP contains a path that cannot be stored on disk, such as too long file names, and folder names that overlap with existing file names.
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High 7.5
Routinator exits when parsing an incorrect or very large CRL file
When Routinator encounters a CRL with many entries, it may hang or run out of memory. If Routinator encounters a CRL file with the wrong encoding, it may exit.
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High 8.2
Routinator incorrectly handles delta updates
When Routinator encounters an RRDP notification file with gaps in the delta entries, it is still accepted and parsed, potentially leading to missing data. If it encounters too many delta entries it may run out of memory.
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High 7.5CVE-2026-97206 Public exploit
DNS-over-QUIC (DoQ) path-migration can lead to use-after-free on multi-threaded deployments.
NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh…
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High 8.7
Stack overwrite from specially formatted TXT-DATA RDATA field
Tokens of text in RDATA (of for example TXT records) under 32 bytes are not checked to stay within the space reserved for the RDATA allowing for arbitrary sized out of bound stack writes, including an overwrite of a callback function pointer which is called d…
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High 8.7
Stack overwrite from a specially crafted and formatted HIP RR
A HIP resource record that fills the RDATA near or at is limit, and has another dname RDATA field (a HIP Rendezvous server) can overwrite the stack with up to 191 bytes of attacker controlled data. Zone files which are written out by NSD itself, such as for z…
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High 8.7
Stack overwrite from a specially crafted and formatted SVCB or HTTPS RR
When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD…
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High 8.7
Stack overwrite from specially formatted base64 RDATA field
When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, su…
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High 8.4
CNAME synthesis could lead to heap corruption
In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis duri…
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High 7.5
Possible heap buffer overflow during DNSSEC canonicalization
In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow during the RRSet canonicalisation routine. This is caused by missing to add the first owner name into the buffer length chec…
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High 8.2
Bypass of BLOCKED ACL items on proxy protocol port over TCP or TLS
The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open.
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High 8.2
Remote UDP DoS by sending multiple DNS Cookie options
Any remote client can crash a (debugging/non-release build type) NSD serve child by sending it a special crafted message with a specially tuned number of DNS Cookie options (17 when UDP payload size is 512). By continuously crashing the serve childs, the remo…
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High 8.2
Wrong interpretation of ACL ranges
When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may be denied, and, IPs that were meant to be denied access cou…
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High 7.5
'dns-error-reporting: yes' leads to stack buffer overflow
In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option (code 18) from the last upstream response is read and uses the option's length as the length of the agent domain. When a domain nam…
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High 7.5
Cross-zone wildcard cache poisoning via RRSIG.labels manipulation
In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a sin…
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High 7.5
Packet of death for DNSCrypt over TCP
In Unbound 1.9.0 up to and including 1.25.1, when a DNSCrypt query is received over TCP, the routine that encrypts the reply in place fails to bound the reply length against the destination buffer size. The size clamp that protects the UDP path is not applied…
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High 7.5
Remote DNS-over-QUIC denial of service due to `quic-size` budget bypass
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers …
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High 7.5
Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains
Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains. Net::DNS::DomainName::decode follows RFC 1035 compression pointers by recursing into itself with no depth limit. It is possible to construct a name which …
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High 8.2
Bypass of client certificate verification with transfer over TLS
When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port (and not the tls-auth…
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High 7.2
Out of bounds stack write with crafted APL RR
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.
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High 8.7
Denial of DNS over TLS service by any DoT client
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the re…
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High 8.7
Heap overflow and crash with crafted SVCB RR
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for …
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High 8.2
Insufficient verification that responses belong to a query
NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the questio…
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High 8.7
Routinator crashes on specifically crafted RRDP XML files
When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator crashes.
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High 8.2
Routinator crashes on specifically crafted ASN strings in the API
When sending a specifically crafted non-UTF-8 string as select-asn query parameter to the /api/v1/origins endpoint, Routinator crashes. This only affects users who allow API access from untrusted networks.
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High 8.3
Routinator cache path traversal using rogue rsync URIs
Routinator does not properly check the module component of rsync URIs, which are used to create the file system paths for the Routinator cache. This allows for path traversal by having a module name containing .., potentially providing an attacker access to t…
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High 8.7
Routinator exits when accepting an incoming HTTP or RTR connection fails
Routinator exits on any error when accepting incoming HTTP or RTR connections, including ones it can recover from such as running out of file descriptors. This condition can be triggered maliciously by an attacker by opening a large number of connections to t…
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High 8.7
Crash during DNSSEC validation of malicious content
NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong…
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High 8.7
Heap overflow with multiple NSID, COOKIE, PADDING EDNS options
NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options ('nsid', 'answer-cookie', '…
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High 8.7
Cache poisoning via the ECS-enabled Rebirthday Attack
A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet (ECS). Unbound is also vulnerable when compiled with ECS support, i.e., '--enable-subnet', AND configured to send E…
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High 7.5
Routinator crashes when illegal characters are present in manifest file names
The initial code parsing the manifest did not check the content of the file names yet later code assumed that it was checked and panicked when encountering illegal characters, resulting in a crash of Routinator.
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High 7.5
Denial of service when trimming EDE text on positive replies
NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses…
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High 7.5
Routinator terminates when RTR connection is reset too quickly after opening
Due to a mistake in error checking, Routinator will terminate when an incoming RTR connection is reset by the peer too quickly after opening.
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High 7.5
Crashes on parsing certain invalid RPKI objects
NLnet Labs' Routinator up to and including version 0.12.1 may crash when trying to parse certain malformed RPKI objects. This is due to insufficient input checking in the bcder library covered by CVE-2023-39914.
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High 7.5
BER/CER/DER decoder panics on invalid input
NLnet Labs' bcder library up to and including version 0.7.2 panics while decoding certain invalid input data rather than rejecting the data with an error. This can affect both the actual decoding stage as well as accessing content of types that utilized delay…
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High 7.5
Triggered crash on direct RRDP access
NLnet Labs Krill supports direct access to the RRDP repository content through its built-in web server at the "/rrdp" endpoint. Prior to 0.12.1 a direct query for any existing directory under "/rrdp/", rather than an RRDP file such as "/rrdp/notification.xml"…