7.1

CVE-2016-2774: canonical ubuntu_linux Improper Input Validation

CVSS: 7.1v2.0HighModified
AliasesSUSE-SU-2016:1692-1SUSE-SU-2016:1735-1SUSE-SU-2016:1791-1
Published 09-03-2016Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2016-2774 is a high (CVSS 7.1) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 73.62% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.

Overall risk
43/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v2.0 (NVD)
EPSS score
73.62%
0%100%
Critical · 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 1 · Related 1
USN-3586-1

Timeline

  1. 09-03-2016
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

73.62%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 73.62% on 19-09-2026

19-09-202619-10-2026
EPSS score
73.62%

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

Suse18 products
  • dhcp&distro=SUSE Linux Enterprise Desktop 12< 4.2.6-14.6.1
  • dhcp&distro=SUSE Linux Enterprise Desktop 12 SP1< 4.3.3-9.1
  • dhcp&distro=SUSE Linux Enterprise Point of Sale 11 SP3< 4.2.4.P2-0.27.1
  • dhcp&distro=SUSE Linux Enterprise Server 11 SP2-LTSS< 4.2.4.P2-0.11.15.1
  • dhcp&distro=SUSE Linux Enterprise Server 11 SP3-LTSS< 4.2.4.P2-0.27.1
Redhat6 products
  • dhclient< 12:4.2.5-47.el7
  • dhcp< 12:4.2.5-47.el7
  • dhcp-common< 12:4.2.5-47.el7
  • dhcp-debuginfo< 12:4.2.5-47.el7
  • dhcp-devel< 12:4.2.5-47.el7
Debian2 products
Canonical1 product
Isc1 product
  • dhcp4.1-esv | 4.1-esv:r1 | 4.1-esv:r10 | 4.1-esv:r10_b1 | 4.1-esv:r11_b1 | 4.1-esv:r11_rc1 | 4.1-esv:r11_rc2 | 4.1-esv:r12 | 4.1-esv:r12_b1 | 4.1-esv:r2 | 4.1-esv:r3 | 4.1-esv:r3_b1 | 4.1-esv:r4 | 4.1-esv:r5 | 4.1-esv:r5_b1 | 4.1-esv:r5_rc1 | 4.1-esv:r5_rc2 | 4.1-esv:r6 | 4.1-esv:r7 | 4.1-esv:r8 | 4.1-esv:r8_b1 | 4.1-esv:r8_rc1 | 4.1-esv:r9 | 4.1-esv:r9_b1 | 4.1-esv:r9_rc1 | 4.1-esv:rc1 | 4.1.0 | 4.1.0:a1 | 4.1.0:a2 | 4.1.0:b1 | 4.1.1 | 4.1.1:b1 | 4.1.1:b2 | 4.1.1:b3 | 4.1.1:p1 | 4.1.1:rc1 | 4.1.2 | 4.1.2:b1 | 4.1.2:p1 | 4.1.2:rc1 | 4.2.0 | 4.2.0:a1 | 4.2.0:a2 | 4.2.0:b1 | 4.2.0:b2 | 4.2.0:p1 | 4.2.0:p2 | 4.2.0:rc1 | 4.2.1 | 4.2.1:b1 | 4.2.1:p1 | 4.2.1:rc1 | 4.2.2 | 4.2.2:b1 | 4.2.2:rc1 | 4.2.3 | 4.2.3:p1 | 4.2.3:p2 | 4.2.4 | 4.2.4:b1 | 4.2.4:p1 | 4.2.4:p2 | 4.2.4:rc1 | 4.2.4:rc2 | 4.2.5 | 4.2.5:b1 | 4.2.5:p1 | 4.2.5:rc1 | 4.2.6 | 4.2.6:b1 | 4.2.6:rc1 | 4.2.7 | 4.2.7:b1 | 4.2.7:rc1 | 4.2.8 | 4.2.8:b1 | 4.2.8:rc1 | 4.2.8:rc2 | 4.3.0 | 4.3.0:a1 | 4.3.0:b1 | 4.3.0:rc1 | 4.3.1 | 4.3.1:b1 | 4.3.1:rc1 | 4.3.2 | 4.3.2:b1 | 4.3.2:rc1 | 4.3.2:rc2 | 4.3.3 | 4.3.3:b1
Ubuntu1 product
  • isc-dhcp< 4.2.4-7ubuntu12.12 | < 4.3.3-5ubuntu12.9

6 vendors · 29 products

References

28 links
Show all 28 references