CVE-2017-3145 | Improper fetch cleanup sequencing in the resolver can cause named to crash

BIND was improperly sequencing cleanup operations on upstream recursion fetch contexts, leading in some cases to a use-after-free error that can trigger an assertion failure and crash in named. Affects BIND 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1.

Published: 2019-01-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-3145 is rated Moderate Risk (59.2/100): CVSS High severity, with high exploitation likelihood (EPSS 27.93%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-3145

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-23 42.46% 27.93% -14.53%
2 2026-06-15 7.99% 42.46% +34.47%
3 2026-03-29 — 7.99% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-3145

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-3145

OS Trackers for CVE-2017-3145

vendor priority summary link
alpine — CVE-2017-3145: 1 source package rows (bind); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2017-3145
debian not yet assigned CVE-2017-3145 not yet assigned priority: Debian including 1 source packages (bind9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-3145
redhat high — https://access.redhat.com/security/cve/CVE-2017-3145
suse high CVE-2017-3145 severity important: SUSE including 444 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 760 product×package rows across 67 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (67 product lines)): Fixed 383, Known Not Affected 220, Known Affected 157. https://www.suse.com/security/cve/CVE-2017-3145/
ubuntu medium CVE-2017-3145 medium priority: Ubuntu including 1 source packages (bind9), 4 status rows across 4 suites (artful, trusty, upstream, xenial): released 4. https://ubuntu.com/security/CVE-2017-3145

Affected software / configurations for CVE-2017-3145

Vendor Product Version Raw CPE
isc bind >= 9.4.0, <= 9.8.8 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
isc bind >= 9.9.0, <= 9.9.11 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
isc bind >= 9.10.0, <= 9.10.6 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
isc bind >= 9.11.0, <= 9.11.2 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
isc bind 9.9.3 cpe:2.3:a:isc:bind:9.9.3:s1:*:*:*:*:*:*
isc bind 9.9.11 cpe:2.3:a:isc:bind:9.9.11:s1:*:*:*:*:*:*
isc bind 9.10.5 cpe:2.3:a:isc:bind:9.10.5:s1:*:*:*:*:*:*
isc bind 9.10.6 cpe:2.3:a:isc:bind:9.10.6:s1:*:*:*:*:*:*
isc bind 9.12.0 cpe:2.3:a:isc:bind:9.12.0:alpha1:*:*:*:*:*:*
isc bind 9.12.0 cpe:2.3:a:isc:bind:9.12.0:b1:*:*:*:*:*:*
isc bind 9.12.0 cpe:2.3:a:isc:bind:9.12.0:b2:*:*:*:*:*:*
isc bind 9.12.0 cpe:2.3:a:isc:bind:9.12.0:rc1:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.4 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.2 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.3 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 6.7 cpe:2.3:o:redhat:enterprise_linux_server_eus:6.7:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.3 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.5 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 6.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:6.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.2 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.3 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
netapp data_ontap_edge — cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*
juniper junos 12.1x46-d76 cpe:2.3:o:juniper:junos:12.1x46-d76:-:*:*:*:*:*:*
juniper junos 12.3x48-d70 cpe:2.3:o:juniper:junos:12.3x48-d70:-:*:*:*:*:*:*
juniper junos 15.1x49-d140 cpe:2.3:o:juniper:junos:15.1x49-d140:-:*:*:*:*:*:*
juniper junos 17.4r2 cpe:2.3:o:juniper:junos:17.4r2:-:*:*:*:*:*:*
juniper junos 18.1r2 cpe:2.3:o:juniper:junos:18.1r2:-:*:*:*:*:*:*
juniper junos 18.2r1 cpe:2.3:o:juniper:junos:18.2r1:-:*:*:*:*:*:*

References for CVE-2017-3145

URL Tags
http://www.securityfocus.com/bid/102716 Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040195 Broken Link Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0101 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0102 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0487 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0488 Third Party Advisory
https://kb.isc.org/docs/aa-01542 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00029.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20180117-0003/ Third Party Advisory
https://supportportal.juniper.net/s/article/2018-07-Security-Bulletin-SRX-Series-Vulnerabilities-in-ISC-BIND-named Third Party Advisory
https://www.debian.org/security/2018/dsa-4089 Third Party Advisory
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