6.5

CVE-2015-7851: ntp Path Traversal

CVSS: 6.5v3.1MediumModified
AliasesDEBIAN-CVE-2015-7851
Published 28-01-2020Last modified 06-08-2024

Vulnerability summary

CVE-2015-7851 is a medium (CVSS 6.5) Path Traversal vulnerability in ntp. EPSS estimates a 3.94% chance of exploitation in the next 30 days, higher than 90.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
3.94%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 6 · Related 4

Timeline

  1. 28-01-2020
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Directory traversal vulnerability in the save_config function in ntpd in ntp_control.c in NTP before 4.2.8p4, when used on systems that do not use '\' or '/' characters for directory separation such as OpenVMS, allows remote authenticated users to overwrite arbitrary files.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.94%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.94% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.94%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintel.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • ntp< 1:4.2.8p4+dfsg-1
Ntp1 product
  • ntp≥ 4.2.0, < 4.2.8 | ≥ 4.3.0, < 4.3.77 | 4.2.8:p1 | 4.2.8:p1-beta1 | 4.2.8:p1-beta2 | 4.2.8:p1-beta3 | 4.2.8:p1-beta4 | 4.2.8:p1-beta5 | 4.2.8:p1-rc1 | 4.2.8:p1-rc2 | 4.2.8:p2 | 4.2.8:p2-rc1 | 4.2.8:p2-rc2 | 4.2.8:p2-rc3 | 4.2.8:p3 | 4.2.8:p3-rc1 | 4.2.8:p3-rc2 | 4.2.8:p3-rc3

2 vendors · 2 products

References

4 links