CVSS 5.9 · Medium EPSS 0,80%
Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada isc bind. Skor CVSS 3.1 5.9 (Medium) menurut NVD.
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| isc | bind | Versi 9.20.0 hingga sebelum 9.20.23 |
| isc | bind | Versi 9.21.0 hingga sebelum 9.21.22 |