7.8

CVE-2016-4997: canonical ubuntu_linux

Modified
AliasesSUSE-SU-2016:1709-1SUSE-SU-2016:1710-1UBUNTU-CVE-2016-4997
Published 03-07-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-4997 is a high (CVSS 7.8) vulnerability in canonical ubuntu_linux. EPSS estimates a 5.68% chance of exploitation in the next 30 days, higher than 92.9% of scored vulnerabilities. 5 public exploits are recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 27-09-2016)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
5.68%
0%100%
Low · -1.30 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits5github, reference, exploit-database, metasploit

Advisory lineage

Upstream 0 · Downstream 40 · Related 33
DSA-3607-1MGASA-2016-0271MGASA-2016-0283MGASA-2016-0284OPENSUSE-SU-2024:10128-1RHSA-2016:1847

Timeline

  1. 03-07-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

5.68%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

Decrease -1.30 pp

From 6.98% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

5 found
  • githubUnverified

    Triforcelinuxsyscallfuzzer

    Maturity: poc

  • referenceUnverified

    Exploit Reference (openwall.com)

    Maturity: unknown

  • exploit-databaselocallinuxUnverified

    Linux Kernel 4.6.2 (Ubuntu 16.04.1) - 'IP6T_SO_SET_REPLACE' Local Privilege Escalation

    Maturity: poc

Show all 5 exploits
  • exploit-databaselocallinux_x86Verified

    Linux Kernel 4.6.3 (x86) - 'Netfilter' Local Privilege Escalation (Metasploit)

    Maturity: weaponized

  • MetasploitMetasploitremoteVerified

    Linux Kernel 4.6.3 Netfilter Privilege Escalation

    exploit/linux/local/netfilter_priv_esc_ipv4

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse33 products
  • kernel-default&distro=SUSE Linux Enterprise Desktop 12< 3.12.60-52.54.2
  • kernel-default&distro=SUSE Linux Enterprise Desktop 12 SP1< 3.12.59-60.45.2
  • kernel-default&distro=SUSE Linux Enterprise Server 12< 3.12.60-52.54.2
  • kernel-default&distro=SUSE Linux Enterprise Server 12 SP1< 3.12.59-60.45.2
  • kernel-default&distro=SUSE Linux Enterprise Server for SAP Applications 12< 3.12.60-52.54.2
Novell7 products
Ubuntu7 products
  • linux< 3.13.0-91.138 | < 4.4.0-28.47
  • linux-lts-utopic< 3.16.0-76.98~14.04.1
  • linux-lts-vivid< 3.19.0-64.72~14.04.1
  • linux-lts-wily< 4.2.0-41.48~14.04.1
  • linux-lts-xenial< 4.4.0-28.47~14.04.1
Debian2 products
Canonical1 product
Linux1 product
  • linux_kernel≥ 2.6.17, < 3.2.80 | ≥ 3.3, < 3.10.103 | ≥ 3.11, < 3.12.62 | ≥ 3.13, < 3.14.73 | ≥ 3.15, < 3.16.37 | ≥ 3.17, < 3.18.37 | ≥ 3.19, < 4.1.28 | ≥ 4.2, < 4.4.14 | ≥ 4.5, < 4.6.3
Oracle1 product

7 vendors · 52 products

References

67 links
Show all 67 references