GITLAB_BASE_URL = "https://gitlab.isc.org/isc-projects/bind9/-/"
+KNOWLEDGEBASE_BASE_URL = "https://kb.isc.org/docs/"
+
+
+# Custom Sphinx role enabling automatic hyperlinking to security advisory in
+# ISC Knowledgebase
+class CVERefRole(ReferenceRole):
+ def __init__(self, base_url: str) -> None:
+ self.base_url = base_url
+ super().__init__()
+
+ def run(self) -> Tuple[List[Node], List[system_message]]:
+ cve_identifier = "(CVE-%s)" % self.target
+
+ target_id = "index-%s" % self.env.new_serialno("index")
+ entries = [
+ ("single", "ISC Knowledgebase; " + cve_identifier, target_id, "", None)
+ ]
+
+ index = addnodes.index(entries=entries)
+ target = nodes.target("", "", ids=[target_id])
+ self.inliner.document.note_explicit_target(target)
+
+ try:
+ refuri = self.base_url + "cve-%s" % self.target
+ reference = nodes.reference(
+ "", "", internal=False, refuri=refuri, classes=["cve"]
+ )
+ if self.has_explicit_title:
+ reference += nodes.strong(self.title, self.title)
+ else:
+ reference += nodes.strong(cve_identifier, cve_identifier)
+ except ValueError:
+ error_text = "invalid ISC Knowledgebase identifier %s" % self.target
+ msg = self.inliner.reporter.error(error_text, line=self.lineno)
+ prb = self.inliner.problematic(self.rawtext, self.rawtext, msg)
+ return [prb], [msg]
+
+ return [index, target, reference], []
# Custom Sphinx role enabling automatic hyperlinking to GitLab issues/MRs.
def setup(app):
+ roles.register_local_role("cve", CVERefRole(KNOWLEDGEBASE_BASE_URL))
roles.register_local_role("gl", GitLabRefRole(GITLAB_BASE_URL))
app.add_crossref_type("iscman", "iscman", "pair: %s; manual page")
:short: Sets the resolver's lame cache.
This is always set to 0. More information is available in the
- `security advisory for CVE-2021-25219
- <https://kb.isc.org/docs/cve-2021-25219>`_.
+ security advisory for :cve:`2021-25219`.
.. namedconf:statement:: servfail-ttl
:tags: server
- The rules for acceptance of records into the cache have been tightened
to prevent the possibility of poisoning if forwarders send records
- outside the configured bailiwick. (CVE-2021-25220)
+ outside the configured bailiwick. :cve:`2021-25220`
ISC would like to thank Xiang Li, Baojun Liu, and Chaoyi Lu from
Network and Information Security Lab, Tsinghua University, and
- TCP connections with :any:`keep-response-order` enabled could leave the
TCP sockets in the ``CLOSE_WAIT`` state when the client did not
- properly shut down the connection. (CVE-2022-0396) :gl:`#3112`
+ properly shut down the connection. :cve:`2022-0396` :gl:`#3112`
- Lookups involving a DNAME could trigger an assertion failure when
:any:`synth-from-dnssec` was enabled (which is the default).
- (CVE-2022-0635)
+ :cve:`2022-0635`
ISC would like to thank Vincent Levigneron from AFNIC for bringing
this vulnerability to our attention. :gl:`#3158`
- When chasing DS records, a timed-out or artificially delayed fetch
could cause ``named`` to crash while resuming a DS lookup.
- (CVE-2022-0667) :gl:`#3129`
+ :cve:`2022-0667` :gl:`#3129`
Feature Changes
~~~~~~~~~~~~~~~
available memory. This flaw was addressed by adding a new
:any:`update-quota` option that controls the maximum number of
outstanding DNS UPDATE messages that :iscman:`named` can hold in a
- queue at any given time (default: 100). (CVE-2022-3094)
+ queue at any given time (default: 100). :cve:`2022-3094`
ISC would like to thank Rob Schulhof from Infoblox for bringing this
vulnerability to our attention. :gl:`#3523`
- :iscman:`named` could crash with an assertion failure when an RRSIG
query was received and :any:`stale-answer-client-timeout` was set to a
- non-zero value. This has been fixed. (CVE-2022-3736)
+ non-zero value. This has been fixed. :cve:`2022-3736`
ISC would like to thank Borja Marcos from Sarenet (with assistance by
Iratxe Niño from Fundación Sarenet) for bringing this vulnerability to
:any:`stale-answer-client-timeout` option set to any value greater
than ``0`` could crash with an assertion failure, when the
:any:`recursive-clients` soft quota was reached. This has been fixed.
- (CVE-2022-3924)
+ :cve:`2022-3924`
ISC would like to thank Maksym Odinintsev from AWS for bringing this
vulnerability to our attention. :gl:`#3619`
- The overmem cleaning process has been improved, to prevent the cache from
significantly exceeding the configured :any:`max-cache-size` limit.
- (CVE-2023-2828)
+ :cve:`2023-2828`
ISC would like to thank Shoham Danino from Reichman University, Anat
Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University,
- A query that prioritizes stale data over lookup triggers a fetch to refresh
the stale data in cache. If the fetch is aborted for exceeding the recursion
quota, it was possible for :iscman:`named` to enter an infinite callback
- loop and crash due to stack overflow. This has been fixed. (CVE-2023-2911)
+ loop and crash due to stack overflow. This has been fixed. :cve:`2023-2911`
:gl:`#4089`
New Features
- Previously, sending a specially crafted message over the control
channel could cause the packet-parsing code to run out of available
stack memory, causing :iscman:`named` to terminate unexpectedly.
- This has been fixed. (CVE-2023-3341)
+ This has been fixed. :cve:`2023-3341`
ISC would like to thank Eric Sesterhenn from X41 D-Sec GmbH for
bringing this vulnerability to our attention. :gl:`#4152`
- A flaw in the networking code handling DNS-over-TLS queries could
cause :iscman:`named` to terminate unexpectedly due to an assertion
failure under significant DNS-over-TLS query load. This has been
- fixed. (CVE-2023-4236)
+ fixed. :cve:`2023-4236`
ISC would like to thank Robert Story from USC/ISI Root Server
Operations for bringing this vulnerability to our attention.
DNS-over-HTTPS (DoH) clients. This has been fixed.
ISC would like to thank Thomas Amgarten from arcade solutions ag for
- bringing this vulnerability to our attention. (CVE-2022-1183)
+ bringing this vulnerability to our attention. :cve:`2022-1183`
:gl:`#3216`
Known Issues
- Previously, there was no limit to the number of database lookups
performed while processing large delegations, which could be abused to
severely impact the performance of :iscman:`named` running as a
- recursive resolver. This has been fixed. (CVE-2022-2795)
+ recursive resolver. This has been fixed. :cve:`2022-2795`
ISC would like to thank Yehuda Afek from Tel-Aviv University and Anat
Bremler-Barr & Shani Stajnrod from Reichman University for bringing
- When an HTTP connection was reused to request statistics from the
stats channel, the content length of successive responses could grow
in size past the end of the allocated buffer. This has been fixed.
- (CVE-2022-2881) :gl:`#3493`
+ :cve:`2022-2881` :gl:`#3493`
- Memory leaks in code handling Diffie-Hellman (DH) keys were fixed that
could be externally triggered, when using TKEY records in DH mode with
- OpenSSL 3.0.0 and later versions. (CVE-2022-2906) :gl:`#3491`
+ OpenSSL 3.0.0 and later versions. :cve:`2022-2906` :gl:`#3491`
- :iscman:`named` running as a resolver with the
:any:`stale-answer-client-timeout` option set to ``0`` could crash
with an assertion failure, when there was a stale CNAME in the cache
- for the incoming query. This has been fixed. (CVE-2022-3080)
+ for the incoming query. This has been fixed. :cve:`2022-3080`
:gl:`#3517`
- Memory leaks were fixed that could be externally triggered in the
- DNSSEC verification code for the EdDSA algorithm. (CVE-2022-38178)
+ DNSSEC verification code for the EdDSA algorithm. :cve:`2022-38178`
:gl:`#3487`
Feature Changes
projects / thirdparty / bind9.git / commitdiff
