NULL pointer dereference in Isc Bind

CVE-2017-3135

Under some conditions when using both DNS64 and RPZ to rewrite query responses, query processing can resume in an inconsistent state leading to either an INSIST assertion failure or an attempt to read through a NULL pointer. Affects BIND 9…

EPSS: 0.292 (97.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-3135?
CVE-2017-3135 is a high-severity vulnerability in Isc Bind, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-01-16.
How severe is CVE-2017-3135?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-3135 known to be exploited?
11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.