CVE-2016-0771

The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4...

5.9 MediumFix available

CVE-2016-0771 is a medium vulnerability (CVSS 5.9) in Samba, published March 8, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.01%, the 87th percentile. Fixed in samba 2:4.3.6+dfsg-1.

The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4, when an AD DC is configured, allows remote authenticated users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from process memory by uploading a crafted DNS TXT record.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: High

Exploit likelihood

3.01%Up 1.7 points since Feb 4, 2022

What each source reports

NVD Score used 5.9

Record: CVE-2016-0771
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
CVSS 2.0: 4.9 MediumAV:N/AC:M/Au:S/C:P/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-0771
Updated: 2026-11-02

EUVDEUVD-2016-0787 No score

Record: EUVD-2016-0787
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mjrq-735v-hm5h 5.9

The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4...

Record: GHSA-mjrq-735v-hm5h
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 5.9

Record: CVE-2016-0771
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-0771 5.9

Record: DEBIAN-CVE-2016-0771
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-0771 5.9

Record: UBUNTU-CVE-2016-0771
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10069-1 No score

ctdb-4.5.0-1.1 on GA media

These are all security issues fixed in the ctdb-4.5.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10069-1
Updated: 2026-11-02

OSVUSN-2922-1 No score

samba vulnerabilities

Jeremy Allison discovered that Samba incorrectly handled ACLs on symlink paths. A remote attacker could use this issue to overwrite the ownership of ACLs using symlinks. (CVE-2015-7560)

Garming Sam and Douglas Bagnall discovered that the Samba internal DNS server incorrectly handled certain DNS TXT records. A remote attacker could use this issue to cause Samba to crash, resulting in a denial of service, or possibly obtain uninitialized memory contents. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2016-0771)

It was discovered that the Samba Web Administration Tool (SWAT) was vulnerable to clickjacking and cross-site request forgery attacks. This issue only affected Ubuntu 12.04 LTS. (CVE-2013-0213, CVE-2013-0214)

Record: USN-2922-1
Updated: 2026-11-02

Affected products

samba

Affected packages

Affected packages
Package	Affected	Fixed
`samba` Debian:12	before 2:4.3.6+dfsg-1	2:4.3.6+dfsg-1
`samba` Debian:13	before 2:4.3.6+dfsg-1	2:4.3.6+dfsg-1
`samba` Debian:14	before 2:4.3.6+dfsg-1	2:4.3.6+dfsg-1
`samba` Debian:7	before 2:3.6.6-6+deb7u7, plus listed versions 2:3.6.6-62:3.6.6-6+deb7u12:3.6.6-6+deb7u1~bpo60+12:3.6.6-6+deb7u22:3.6.6-6+deb7u2~bpo60+1 Show 6 moreShow less 2:3.6.6-6+deb7u32:3.6.6-6+deb7u42:3.6.6-6+deb7u4~bpo60+12:3.6.6-6+deb7u52:3.6.6-6+deb7u5~bpo60+12:3.6.6-6+deb7u6	2:3.6.6-6+deb7u7
`samba` Debian:8	before 2:4.1.17+dfsg-2+deb8u2, plus listed versions 2:4.1.17+dfsg-22:4.1.17+dfsg-2+deb8u1	2:4.1.17+dfsg-2+deb8u2
`samba` Ubuntu:14.04:LTS	before 2:4.1.6+dfsg-1ubuntu2.14.04.13, plus listed versions 2:3.6.18-1ubuntu32:4.0.10+dfsg-4ubuntu22:4.0.13+dfsg-1ubuntu12:4.1.3+dfsg-2ubuntu22:4.1.3+dfsg-2ubuntu3 Show 14 moreShow less 2:4.1.3+dfsg-2ubuntu42:4.1.3+dfsg-2ubuntu52:4.1.6+dfsg-1ubuntu12:4.1.6+dfsg-1ubuntu22:4.1.6+dfsg-1ubuntu2.14.04.12:4.1.6+dfsg-1ubuntu2.14.04.22:4.1.6+dfsg-1ubuntu2.14.04.32:4.1.6+dfsg-1ubuntu2.14.04.42:4.1.6+dfsg-1ubuntu2.14.04.52:4.1.6+dfsg-1ubuntu2.14.04.72:4.1.6+dfsg-1ubuntu2.14.04.82:4.1.6+dfsg-1ubuntu2.14.04.92:4.1.6+dfsg-1ubuntu2.14.04.112:4.1.6+dfsg-1ubuntu2.14.04.12	2:4.1.6+dfsg-1ubuntu2.14.04.13
`samba` Ubuntu:16.04:LTS	before 2:4.3.6+dfsg-1ubuntu1, plus listed versions 2:4.1.17+dfsg-4ubuntu22:4.1.20+dfsg-1ubuntu12:4.1.20+dfsg-1ubuntu22:4.1.20+dfsg-1ubuntu32:4.1.20+dfsg-1ubuntu52:4.3.3+dfsg-1ubuntu12:4.3.3+dfsg-1ubuntu22:4.3.3+dfsg-1ubuntu3	2:4.3.6+dfsg-1ubuntu1
`samba` openSUSE:Tumbleweed	before 4.5.0-1.1	4.5.0-1.1

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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