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CVE-2017-3143

24
FAUCET Score

CVE-2017-3143 describes an authentication bypass vulnerability in multiple versions of BIND DNS software, including those distributed by Debian and Red Hat. An attacker with knowledge of a valid TSIG key name could manipulate BIND into accepting unauthorized dynamic updates. This medium-severity vulnerability (CVSS 5.9) has a high impact on integrity, requiring high attack complexity but no user interaction. While not actively exploited in the wild and lacking public exploit code, it has garnered some community attention and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.4.0, <= 9.8.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.9.0, <= 9.9.10CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.10.0, <= 9.10.5CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.11.0, <= 9.11.1CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
9.9.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.0:p1:*:*:*:*:*:*

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:H/A:N

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

Exploit Intelligence

EPSS Score
18.30%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1830 is in the 97th percentile among its peer group of 19,956 CVEs.

Social Chatter

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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: bind-32:9.8.2-0.62.rc1.el6_9.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bind-32:9.9.4-50.el7_3.1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: bind97

Vendor Advisories (1)

redhatCVE-2017-3143Important

bind: An error in TSIG authentication can permit unauthorized dynamic updates

Jun 29, 2017

References

access.redhat.com / errata/RHSA-2017:1679
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1680
Third Party Advisory
h20566.www2.hpe.com / hpsc/doc/public/display
Third Party Advisory
kb.isc.org / docs/aa-01503
Vendor Advisory
security.netapp.com / advisory/ntap-20190830-0003
debian.org / security/2017/dsa-3904
Third Party Advisory
securityfocus.com / bid/99337
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038809
Third Party AdvisoryVDB Entry