6.5

CVE-2016-6170: isc bind Improper Input Validation

Modified
AliasesUBUNTU-CVE-2016-6170DEBIAN-CVE-2016-6170
Published 06-07-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-6170 is a medium (CVSS 6.5) Improper Input Validation vulnerability in isc bind. EPSS estimates a 40.94% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
40.94%
0%100%
High · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
SUSE-SU-2017:0998-1SUSE-SU-2017:0999-1SUSE-SU-2017:1000-1USN-5747-1

Timeline

  1. 06-07-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

40.94%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 40.94% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Xfer Limit

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • bind9< 1:9.10.6+dfsg-1
Isc1 product
  • bind≥ 9.0, ≤ 9.9.8 | ≥ 9.10.0, ≤ 9.10.3 | 9.9.9 | 9.9.9:beta1 | 9.9.9:beta2 | 9.9.9:p1 | 9.10.4 | 9.10.4:p1 | 9.11.0:a1 | 9.11.0:a2 | 9.11.0:a3 | 9.11.0:b1
Redhat1 product
Ubuntu1 product
  • bind9All versions (No fix recorded) | < 1:9.10.3.dfsg.P4-8ubuntu1.19+esm5

4 vendors · 4 products

References

17 links
Show all 17 references