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CVE-2017-3135

22
FAUCET Score

CVE-2017-3135 describes a denial-of-service vulnerability in BIND versions 9.8.8 through 9.11.1b1, affecting products from vendors like Debian, ISC, NetApp, and Red Hat. This flaw occurs when DNS64 and RPZ are used concurrently, leading to an inconsistent state that can cause an assertion failure or NULL pointer dereference. With a CVSS v3 score of 5.9 (Medium), this vulnerability is remotely exploitable with high attack complexity, potentially resulting in a complete denial of service. There is no evidence of active exploitation, nor are public exploit tools like Metasploit or Nuclei available, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.9.3CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.3:*:*:*:*:*:*:*
9.9.3CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.3:s1:*:*:*:*:*:*
9.9.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.8:*:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:p5:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:s7:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
17.11%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1711 is in the 97th percentile among its peer group of 19,954 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bind-32:9.9.4-38.el7_3.2
View patch

Vendor Advisories (1)

redhatCVE-2017-3135Moderate

bind: Assertion failure when using DNS64 and RPZ Can Lead to Crash

Feb 8, 2017

References

rhn.redhat.com / errata/RHSA-2017-0276.html
Third Party Advisory
h20566.www2.hpe.com / hpsc/doc/public/display
Third Party Advisory
kb.isc.org / docs/aa-01453
Vendor Advisory
security.gentoo.org / glsa/201708-01
Third Party Advisory
security.netapp.com / advisory/ntap-20180926-0005
Third Party Advisory
debian.org / security/2017/dsa-3795
Third Party Advisory
securityfocus.com / bid/96150
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037801
Third Party AdvisoryVDB Entry