CVE-2015-7973: canonical ubuntu_linux 7PK - Security Features
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2015-7973DEBIAN-CVE-2015-7973
Published 30-01-2017Last modified 06-08-2024
Vulnerability summary
CVE-2015-7973 is a medium (CVSS 6.5) 7PK - Security Features vulnerability in canonical ubuntu_linux. EPSS estimates a 3.35% chance of exploitation in the next 30 days, higher than 88.5% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
3.35%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 30-01-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.
CVSS metrics
5 scores · 3 sources · 3 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Medium 6.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HSourcesSingle source
Medium 5.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.35%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
-0.01 pp
From 3.36% on 18-09-2026
18-09-202618-10-2026
EPSS score3.35%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Netapp2 products
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04
Debian1 product
- ntp< 1:4.2.8p7+dfsg-1
Freebsd1 product
- freebsdEOL≥ 10.0, < 10.1 | 9.3 | 9.3:p1 | 9.3:p10 | 9.3:p12 | 9.3:p13 | 9.3:p16 | 9.3:p19 | 9.3:p2 | 9.3:p20 | 9.3:p21 | 9.3:p22 | 9.3:p23 | 9.3:p24 | 9.3:p25 | 9.3:p3 | 9.3:p5 | 9.3:p6 | 9.3:p7 | 9.3:p8 | 9.3:p9 | 10.1 | 10.1:p1 | 10.1:p10 | 10.1:p12 | 10.1:p15 | 10.1:p16 | 10.1:p17 | 10.1:p18 | 10.1:p19 | 10.1:p2 | 10.1:p22 | 10.1:p24 | 10.1:p25 | 10.1:p26 | 10.1:p27 | 10.1:p3 | 10.1:p4 | 10.1:p5 | 10.1:p6 | 10.1:p7 | 10.1:p8 | 10.1:p9 | 10.2 | 10.2:p1 | 10.2:p10 | 10.2:p2 | 10.2:p5 | 10.2:p7 | 10.2:p8 | 10.2:p9
Ntp1 product
- ntp< 4.2.8 | ≥ 4.3.0, < 4.3.90 | 4.2.8 | 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 | 4.2.8:p4 | 4.2.8:p5
Ubuntu1 product
- ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 | < 1:4.2.8p4+dfsg-3ubuntu5.3
6 vendors · 7 products
References
28 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpdVendor AdvisoryX Refsource CISCOThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.htmlVendor AdvisoryX Refsource SUSEBroken Link
- h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_usX Refsource CONFIRMThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.htmlVendor AdvisoryX Refsource SUSEBroken Link
Show all 28 references
- h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_usX Refsource CONFIRMThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.htmlVendor AdvisoryX Refsource SUSEBroken Link
- security.freebsd.org/advisories/FreeBSD-SA-16:09.ntp.ascVendor AdvisoryX Refsource FREEBSDThird Party Advisory
us-cert.cisa.gov/ics/advisories/icsa-21-103-11X Refsource CONFIRMThird Party AdvisoryUS Government Resource