A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.
{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "9.12.0"
},
{
"last_affected": "9.12.1"
}
],
"source": "CPE_FIELD",
"cpe": [
"cpe:2.3:a:isc:bind:9.12.0:*:*:*:*:*:*:*",
"cpe:2.3:a:isc:bind:9.12.1:*:*:*:*:*:*:*"
]
}