CVE-2016-2124: canonical ubuntu_linux Improper Authentication
Vulnerability summary
CVE-2016-2124 is a medium (CVSS 5.9) Improper Authentication vulnerability in canonical ubuntu_linux. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 78.1% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 24 · Related 15Timeline
- 18-02-2022PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.77%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.77% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat20 products
- codeready_linux_builderna
- enterprise_linuxEOL7.0 | 8.0
- enterprise_linux_desktop7.0
- enterprise_linux_eus8.2 | 8.4
- enterprise_linux_for_ibm_z_systems7.0 | 8.0
Debian2 products
- samba< 2:4.13.14+dfsg-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- samba≥ 3.0.0, < 4.13.17-r0 | ≥ 3.0.0, < 4.14.12-r0 | ≥ 3.0.0, < 4.15.2-r0
Canonical1 product
- ubuntu_linuxEOL18.04 | 20.04 | 21.04 | 21.10
Fedoraproject1 product
- fedoraEOL33 | 34 | 35
Samba1 product
- samba≥ 3.0.0, < 4.13.14 | ≥ 4.14.0, < 4.14.10 | ≥ 4.15.0, < 4.15.2
Ubuntu1 product
- sambaAll versions (No fix recorded) | < 2:4.7.6+dfsg~ubuntu-0ubuntu2.26 | < 2:4.13.14+dfsg-0ubuntu0.20.04.1 | < 2:4.13.14+dfsg-0ubuntu1
7 vendors · 27 products
References
12 links
- security.gentoo.org/glsa/202309-06Vendor Advisory
