Description
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
ISC BIND 9
Default version status: unaffected
9.16.0 to ≤ 9.16.50affected9.18.0 to ≤ 9.18.39affected9.20.0 to ≤ 9.20.13affected9.21.0 to ≤ 9.21.12affected9.16.8-S1 to ≤ 9.16.50-S1affected9.18.11-S1 to ≤ 9.18.39-S1affected9.20.9-S1 to ≤ 9.20.13-S1affected