5.3

CVE-2015-8138: ntp Improper Input Validation

CVSS: 5.3v3.0MediumModified
AliasesRHSA-2016:0063UBUNTU-CVE-2015-8138DEBIAN-CVE-2015-8138
Published 30-01-2017Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-8138 is a medium (CVSS 5.3) Improper Input Validation vulnerability in ntp. EPSS estimates a 6.25% chance of exploitation in the next 30 days, higher than 93.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.0 (NVD)
EPSS score
6.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 6
DLA-559-1DSA-3629-1MGASA-2016-0039OPENSUSE-SU-2024:10181-1SUSE-SU-2016:1175-1SUSE-SU-2016:1177-1

Timeline

  1. 30-01-2017
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

6.25%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

0.00 pp

From 6.25% on 18-09-2026

18-09-202618-10-2026
EPSS score
6.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat6 products
  • ntp< 0:4.2.6p5-5.el6_7.4 | < 0:4.2.6p5-22.el7_2.1
  • ntp-debuginfo< 0:4.2.6p5-5.el6_7.4 | < 0:4.2.6p5-22.el7_2.1
  • ntp-doc< 0:4.2.6p5-5.el6_7.4 | < 0:4.2.6p5-22.el7_2.1
  • ntp-perl< 0:4.2.6p5-5.el6_7.4 | < 0:4.2.6p5-22.el7_2.1
  • ntpdate< 0:4.2.6p5-5.el6_7.4 | < 0:4.2.6p5-22.el7_2.1
Debian1 product
  • ntp< 1:4.2.8p7+dfsg-1
Ntp1 product
  • ntp≤ 4.2.8 | 4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.3.5 | 4.3.6 | 4.3.7 | 4.3.8 | 4.3.10 | 4.3.11 | 4.3.12 | 4.3.13 | 4.3.14 | 4.3.15 | 4.3.16 | 4.3.17 | 4.3.18 | 4.3.19 | 4.3.20 | 4.3.21 | 4.3.22 | 4.3.23 | 4.3.24 | 4.3.25 | 4.3.26 | 4.3.27 | 4.3.28 | 4.3.29 | 4.3.30 | 4.3.31 | 4.3.32 | 4.3.33 | 4.3.34 | 4.3.35 | 4.3.36 | 4.3.37 | 4.3.38 | 4.3.39 | 4.3.40 | 4.3.41 | 4.3.42 | 4.3.43 | 4.3.44 | 4.3.45 | 4.3.46 | 4.3.47 | 4.3.48 | 4.3.49 | 4.3.50 | 4.3.51 | 4.3.52 | 4.3.53 | 4.3.54 | 4.3.55 | 4.3.56 | 4.3.57 | 4.3.58 | 4.3.59 | 4.3.60 | 4.3.61 | 4.3.62 | 4.3.63 | 4.3.64 | 4.3.65 | 4.3.66 | 4.3.67 | 4.3.68 | 4.3.69 | 4.3.70 | 4.3.71 | 4.3.72 | 4.3.73 | 4.3.74 | 4.3.75 | 4.3.76 | 4.3.77 | 4.3.78 | 4.3.79 | 4.3.80 | 4.3.81 | 4.3.82 | 4.3.83 | 4.3.84 | 4.3.85 | 4.3.86 | 4.3.87 | 4.3.88 | 4.3.89
Ubuntu1 product
  • ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 | < 1:4.2.8p4+dfsg-3ubuntu5.3

4 vendors · 9 products

References

45 links
Show all 45 references