CVE-2022-0396 log

Source	CVE Red Hat MITRE NVD Debian Ubuntu SUSE Alpine Mageia CVE Details CIRCL Bugs Arch Linux Red Hat Gentoo SUSE GitHub Lists oss-security full-disclosure bugtraq Misc GitHub code web search
Severity	Medium
Remote	Yes
Type	Denial of service
Description	ISC recently discovered an issue in BIND that allows TCP connection slots to be consumed for an indefinite time frame via a specifically crafted TCP stream sent from a client. This issue is present in BIND 9.16.11 to 9.16.26 (including S editions), and 9.18.0. This issue can only be triggered on BIND servers which have keep-response-order enabled, which is not the default configuration. The keep-response-order option is an ACL block; any hosts which are specified within it will be able to trigger this issue on affected versions. Specifically crafted TCP streams can cause connections to BIND to remain in CLOSE_WAIT status for an indefinite period of time, even after the client has terminated the connection.

Group	Package	Affected	Fixed	Severity	Status	Ticket
AVG-2661	bind	9.18.0-1	9.18.1-1	High	Fixed

Date	Advisory	Group	Package	Severity	Type
04 Apr 2022	ASA-202204-5	AVG-2661	bind	High	multiple issues

References
https://kb.isc.org/docs/cve-2022-0396 https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/5987 https://gitlab.isc.org/isc-projects/bind9/-/commit/ae7fa0a3082d1b97b1123a96a78fbbe39d525be5

Notes
Workarounds: To mitigate this issue in all affected versions of BIND, use the default setting of keep-response-order { none; }.