VIR Vulnerability Intelligence Relay

CVE-2016-2110

medium
Published 2016-04-25 · Modified 2026-05-06
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CVSS v3
5.9
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
5.9

Description

The NTLMSSP authentication implementation in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSP_NEGOTIATE_SEAL or NTLMSSP_NEGOTIATE_SIGN option to disrupt LDAP security.

Predictions

Exploit likelihood
69%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
suse slesaffected
ubuntu ubuntu14.04affected
ubuntu ubuntu15.10affected
ubuntu ubuntu16.04affected
debian debianbookwormfixed2:4.3.7+dfsg-1
debian debianbullseyefixed2:4.3.7+dfsg-1
debian debianforkyfixed2:4.3.7+dfsg-1
debian debiansidfixed2:4.3.7+dfsg-1
debian debiantrixiefixed2:4.3.7+dfsg-1

Application impact
VendorProductVersionsFixed
sambasamba3.0.0
sambasamba3.0.1
sambasamba3.0.2
sambasamba3.0.2a
sambasamba3.0.3
sambasamba3.0.4
sambasamba3.0.5
sambasamba3.0.6
sambasamba3.0.7
sambasamba3.0.8
sambasamba3.0.9
sambasamba3.0.10
sambasamba3.0.11
sambasamba3.0.12
sambasamba3.0.13
sambasamba3.0.14
sambasamba3.0.14a
sambasamba3.0.15
sambasamba3.0.16
sambasamba3.0.17
sambasamba3.0.18
sambasamba3.0.19
sambasamba3.0.20
sambasamba3.0.20a
sambasamba3.0.20b
sambasamba3.0.21
sambasamba3.0.21a
sambasamba3.0.21b
sambasamba3.0.21c
sambasamba3.0.22
sambasamba3.0.23
sambasamba3.0.23a
sambasamba3.0.23b
sambasamba3.0.23c
sambasamba3.0.23d
sambasamba3.0.24
sambasamba3.0.25
sambasamba3.0.25a
sambasamba3.0.25b
sambasamba3.0.25c
sambasamba3.0.26
sambasamba3.0.26a
sambasamba3.0.27
sambasamba3.0.28
sambasamba3.0.29
sambasamba3.0.30
sambasamba3.0.31
sambasamba3.0.32
sambasamba3.0.33
sambasamba3.0.34
sambasamba3.0.35
sambasamba3.0.36
sambasamba3.0.37
sambasamba3.2.0
sambasamba3.2.1
sambasamba3.2.2
sambasamba3.2.3
sambasamba3.2.4
sambasamba3.2.5
sambasamba3.2.6
sambasamba3.2.7
sambasamba3.2.8
sambasamba3.2.9
sambasamba3.2.10
sambasamba3.2.11
sambasamba3.2.12
sambasamba3.2.13
sambasamba3.2.14
sambasamba3.2.15
sambasamba3.3.0
sambasamba3.3.1
sambasamba3.3.2
sambasamba3.3.3
sambasamba3.3.4
sambasamba3.3.5
sambasamba3.3.6
sambasamba3.3.7
sambasamba3.3.8
sambasamba3.3.9
sambasamba3.3.10
sambasamba3.3.11
sambasamba3.3.12
sambasamba3.3.13
sambasamba3.3.14
sambasamba3.3.15
sambasamba3.3.16
sambasamba3.4.0
sambasamba3.4.1
sambasamba3.4.2
sambasamba3.4.3
sambasamba3.4.4
sambasamba3.4.5
sambasamba3.4.6
sambasamba3.4.7
sambasamba3.4.8
sambasamba3.4.9
sambasamba3.4.10
sambasamba3.4.11
sambasamba3.4.12
sambasamba3.4.13
sambasamba3.4.14
sambasamba3.4.15
sambasamba3.4.16
sambasamba3.4.17
sambasamba3.5.0
sambasamba3.5.1
sambasamba3.5.2
sambasamba3.5.3
sambasamba3.5.4
sambasamba3.5.5
sambasamba3.5.6
sambasamba3.5.7
sambasamba3.5.8
sambasamba3.5.9
sambasamba3.5.10
sambasamba3.5.11
sambasamba3.5.12
sambasamba3.5.13
sambasamba3.5.14
sambasamba3.5.15
sambasamba3.5.16
sambasamba3.5.17
sambasamba3.5.18
sambasamba3.5.19
sambasamba3.5.20
sambasamba3.5.21
sambasamba3.5.22
sambasamba3.6.0
sambasamba3.6.1
sambasamba3.6.2
sambasamba3.6.3
sambasamba3.6.4
sambasamba3.6.5
sambasamba3.6.6
sambasamba3.6.7
sambasamba3.6.8
sambasamba3.6.9
sambasamba3.6.10
sambasamba3.6.11
sambasamba3.6.12
sambasamba3.6.13
sambasamba3.6.14
sambasamba3.6.15
sambasamba3.6.16
sambasamba3.6.17
sambasamba3.6.18
sambasamba3.6.19
sambasamba3.6.20
sambasamba3.6.21
sambasamba3.6.22
sambasamba3.6.23
sambasamba3.6.24
sambasamba3.6.25
sambasamba4.0.0
sambasamba4.0.1
sambasamba4.0.2
sambasamba4.0.3
sambasamba4.0.4
sambasamba4.0.5
sambasamba4.0.6
sambasamba4.0.7
sambasamba4.0.8
sambasamba4.0.9
sambasamba4.0.10
sambasamba4.0.11
sambasamba4.0.12
sambasamba4.0.13
sambasamba4.0.14
sambasamba4.0.15
sambasamba4.0.16
sambasamba4.0.17
sambasamba4.0.18
sambasamba4.0.19
sambasamba4.0.20
sambasamba4.0.21
sambasamba4.0.22
sambasamba4.0.23
sambasamba4.0.24
sambasamba4.0.25
sambasamba4.0.26
sambasamba4.1.0
sambasamba4.1.1
sambasamba4.1.2
sambasamba4.1.3
sambasamba4.1.4
sambasamba4.1.5
sambasamba4.1.6
sambasamba4.1.7
sambasamba4.1.8
sambasamba4.1.9
sambasamba4.1.10
sambasamba4.1.11
sambasamba4.1.12
sambasamba4.1.13
sambasamba4.1.14
sambasamba4.1.15
sambasamba4.1.16
sambasamba4.1.17
sambasamba4.1.18
sambasamba4.1.19

References

CWEs

CWE-254

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.