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Some fixes available 11 of 20
Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can...
3 affected packages
bind9, isc-dhcp, bind9-libs
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | Fixed | Fixed | Fixed | Fixed |
isc-dhcp | Needs evaluation | Not affected | Not affected | Needs evaluation |
bind9-libs | Not in release | Needs evaluation | Needs evaluation | Not in release |
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...
2 affected packages
isc-dhcp, bind9
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
isc-dhcp | — | Not affected | Not affected | Not affected |
bind9 | — | Fixed | Not affected | Not affected |
By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Fixed | Fixed | Fixed |
isc-dhcp | — | Not affected | Not affected | Not affected |
By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Not affected | Fixed | Fixed |
isc-dhcp | — | Not affected | Not affected | Not affected |
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...
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Fixed | Not affected | Not affected |
isc-dhcp | — | Not affected | Not affected | Not affected |
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...
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Not affected | Not affected | Not affected |
isc-dhcp | — | Not affected | Not affected | Not affected |
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...
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Fixed | Fixed | Not affected |
isc-dhcp | — | Not affected | Not affected | Not affected |
By sending specific queries to the resolver, an attacker can cause named to crash.
2 affected packages
bind9, isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
bind9 | — | Fixed | Not affected | Not affected |
isc-dhcp | — | Not affected | Not affected | Not affected |
In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.
1 affected package
isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
isc-dhcp | — | Fixed | Fixed | Fixed |
In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to...
1 affected package
isc-dhcp
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
isc-dhcp | — | Fixed | Fixed | Fixed |