22 results · Feed
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High 7.5
Hickory DNS hickory-proto 0.3.1 before 0.26.1 CPU Exhaustion via BinEncoder Name Compression
Hickory DNS hickory-proto from 0.3.1 before 0.26.1 contains a denial of service vulnerability in BinEncoder that allows remote attackers to exhaust CPU through quadratic-time name compression. Attackers can send malicious DNS messages with many records that a…
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High 7.5
Hickory DNS NSEC3 Closest-Encloser Proof Unbounded Loop Denial of Service
Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 and hickory-net before 0.26.1 contain an unbounded loop vulnerability in DnssecDnsHandle NSEC3 closest-encloser proof validation when the SOA owner is not an ancestor of the QNAME. Upstream attackers can…
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Medium 6.5
Hickory DNS 0.26.0-beta.1 before 0.26.2 NSEC3 Proof of Nonexistence Forgery
Hickory DNS hickory-proto 0.25.0 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 invert the relational operators in the wrap-around branch of find_covering_record() in nsec3.rs, so the last NSEC3 record in a zone's hash ring covers every ha…
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High 8.8
Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw in the validating recursor's NSEC handler that accepts parent-side ancestor-delegation NSEC records as proof of nonexistence for name…
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High 8.8
Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC3
Hickory DNS hickory-proto 0.25 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw in the validating recursor's NSEC3 handler, which matches the closest encloser by hash alone without checking the type bitmap an…
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Medium 4.8
Hickory DNS through 0.26.0-alpha.1 DNSSEC NSEC Validation Bypass for Empty Non-Terminals
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain an NSEC validation flaw that returns a secure proof for NXDOMAIN responses when the covering NSEC's Next Domain Name is a strict descendant of the query name,…
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Medium 5.9
Hickory DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Validation Bypass via Missing RFC 6840 Checks
Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 fail to verify, per RFC 6840 §4.4, that an NSEC or NSEC3 record denying a DS RRset also proves the delegation's NS record exists. Attackers can reuse child-side NSEC …
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Medium 5.3
Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Unrelated RRset
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw that accepts a response as a positive answer when any valid RRset appears in the answer section, without checking that the RRset is r…
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High 7.5
Hickory-DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Nonexistence Proof Forgery via NSEC3
Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belongs to the correct zon…
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High 7.5
Hickory DNS 0.24.0 before 0.26.2 Denial of Service via Zone File Parser
The zone file parser in the hickory-proto crate of Hickory DNS 0.24.0 before 0.26.2 panics when a single token in a zone file is 4096 bytes or longer. Attackers who can supply untrusted zone files to an application using the parser can trigger the panic to ca…
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High 7.5
hickory-dns from 0.20.1 before 0.26.2 Panic in SVCB/HTTPS Zone File Parser
hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser. Attackers can supply untrusted zone files where only a single or double quote replaces a service parameter …
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High 7.5
Hickory-dns 0.20.1 before 0.26.2 Panic DoS via SVCB/HTTPS Zone Parser
Hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser, which panics on malformed alpn values. Attackers can supply untrusted zone files with unbalanced quotes, co…
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High 7.5
Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding
Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via malformed records. Attackers can send a crafted TSIG record in DNS wire format to cause unchecked subt…
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High 7.5
Hickory DNS from 0.18 before 0.26.2 Memory Amplification DoS via RR Counts
The DNS wire-format message parser in hickory-proto (Hickory DNS) 0.18 before 0.26.2 preallocates record vectors sized by the untrusted ANCOUNT, NSCOUNT, and ARCOUNT header fields before reading record data. Remote attackers can send a UDP datagram, or a spoo…
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Unscored —
Panic when an SVCB or HTTPS parameter value is a single quote character
When an SVCB or HTTPS record is parsed from its text (zone file) form, surrounding double quotes are removed from each service parameter value by checking that the value starts and ends with `"` and slicing off the first and last character. A value that is a …
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Unscored —
Panic on a malformed `alpn` value when parsing SVCB or HTTPS records from text
When an SVCB or HTTPS record is parsed from its text (zone file) form, the `alpn` service parameter value is split into a list of protocol names. That step called `expect` on the result, on the assumption that it could not fail. A malformed value, such as one…
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Unscored —
Integer underflow when reporting a malformed TSIG record
When a TSIG record is decoded from the DNS wire format, its MAC length and "other data" length are checked against the end of the record data. If a check failed, the error value was built from `end_idx - decoder.index()`. For a malformed record the decoder ca…
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Unscored —
Memory amplification from record counts in the DNS message header
When a DNS message is decoded, the vectors for the question, answer, authority and additional sections were created with `Vec::with_capacity` set to the counts in the message header. Those counts come from the sender and are not checked against the size of th…
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Medium —
hickory-proto vulnerable to CPU exhaustion during message encoding due to O(n²) name compression
During message encoding, `hickory-proto`'s `BinEncoder` stores pointers to labels that are candidates for name compression in a `Vec<(usize, Vec<u8>)>`. The name compression logic then searches for matches with a linear scan. A malicious message with many rec…
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High —
hickory-proto: NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses
The NSEC3 closest-encloser proof validation in `hickory-proto`'s (0.25.0-alpha.3 ... 0.25.2) and `hickory-net`'s (0.26.0-alpha.1 .. 0.26.0) `DnssecDnsHandle` walks from the QNAME up to the SOA owner name, building a list of candidate encloser names. The itera…
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Medium —
Hickory DNS failure to verify self-signed RRSIG for DNSKEYs
Summary The DNSSEC validation routines treat entire RRsets of DNSKEY records as trusted once they have established trust in only one of the DNSKEYs. As a result, if a zone includes a DNSKEY with a public key that matches a configured trust anchor, all keys in…
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Medium 5.7
DNSSEC validation may accept broken authentication chains
Hickory DNS is a Rust based DNS client, server, and resolver. A vulnerability present starting in version 0.8.0 and prior to versions 0.24.3 and 0.25.0-alpha.5 impacts Hickory DNS users relying on DNSSEC verification in the client library, stub resolver, or r…