1.8

CVE-2015-1798: ntp DEPRECATED: Code

CVSS: 1.8v2.0LowModified
AliasesUBUNTU-CVE-2015-1798DEBIAN-CVE-2015-1798
Published 08-04-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-1798 is a low (CVSS 1.8) DEPRECATED: Code vulnerability in ntp. EPSS estimates a 2.24% chance of exploitation in the next 30 days, higher than 82.5% of scored vulnerabilities.

Overall risk
8/100
0100
Minimal · default modelHow is this calculated?
CVSS score
1.8/10
010
Low · v2.0 (NVD)
EPSS score
2.24%
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 8 · Related 3
DLA-192-1DSA-3223-1MGASA-2015-0152OPENSUSE-SU-2024:10181-1RHSA-2015:1459RHSA-2015:2231

Timeline

  1. 08-04-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.24%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

0.00 pp

From 2.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.24%

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

Debian1 product
  • ntp< 1:4.2.6.p5+dfsg-6
Ntp1 product
  • ntp≤ 4.2.7p444
Ubuntu1 product
  • ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3

3 vendors · 3 products

References

25 links
Show all 25 references