CVE-2015-4620

high
Published 2015-07-08 · Modified 2026-05-06
CVSS v3
CVSS v2
7.8
VIR risk
7.8

Description

name.c in named in ISC BIND 9.7.x through 9.9.x before 9.9.7-P1 and 9.10.x before 9.10.2-P2, when configured as a recursive resolver with DNSSEC validation, allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) by constructing crafted zone data and then making a query for a name in that zone.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-4620

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://kb.isc.org/article/AA-01267

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed1:9.9.5.dfsg-10
debian debianbullseyefixed1:9.9.5.dfsg-10
debian debianforkyfixed1:9.9.5.dfsg-10
debian debiansidfixed1:9.9.5.dfsg-10
debian debiantrixiefixed1:9.9.5.dfsg-10

Application impact

VendorProductVersionsFixed
iscbind9.7.0
iscbind9.7.1
iscbind9.7.2
iscbind9.7.3
iscbind9.7.4
iscbind9.7.5
iscbind9.7.6
iscbind9.7.7
iscbind9.8.0
iscbind9.8.1
iscbind9.8.2
iscbind9.8.3
iscbind9.8.4
iscbind9.8.5
iscbind9.8.6
iscbind9.9.0
iscbind9.9.1
iscbind9.9.2
iscbind9.9.3
iscbind9.9.4
iscbind9.9.5
iscbind9.9.6
iscbind9.9.7
iscbind9.10.0
iscbind9.10.1
iscbind9.10.2

References

CWEs

CWE-17

Verify integrity in audit chain (admin only). AS-IS.