CVE-2020-14318
published 2020-12-03CVE-2020-14318: A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and…
PriorityP424medium4.3CVSS 3.1
AVNACLPRLUINSUCLINAN
EPSS
1.54%
74.7th percentile
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
Affected
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | samba | < samba 2:4.13.2+dfsg-2 (bookworm) | samba 2:4.13.2+dfsg-2 (bookworm) |
| msrc | azl3_samba_4.18.3-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_samba_4.12.5-6_on_cbl_mariner_2.0 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | storage | — | — |
| samba | samba | — | — |
| samba | samba | >= 0 < 2:4.13.2+dfsg-2 | 2:4.13.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.13.2+dfsg-2 | 2:4.13.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.13.2+dfsg-2 | 2:4.13.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.13.2+dfsg-2 | 2:4.13.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.3.11+dfsg-0ubuntu0.16.04.32 | 2:4.3.11+dfsg-0ubuntu0.16.04.32 |
| samba | samba | >= 0 < 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 |
| samba | samba | >= 0 < 2:4.11.6+dfsg-0ubuntu1.6 | 2:4.11.6+dfsg-0ubuntu1.6 |
| samba | samba | >= 0 < 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11 | 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11 |
| samba | samba | >= 3.6.0 < 4.11.15 | 4.11.15 |
| samba | samba | >= 4.12.0 < 4.12.9 | 4.12.9 |
| samba | samba | >= 4.13.0 < 4.13.1 | 4.13.1 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:P/I:N/A:N
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_msrc4.3MEDIUM
vendor_redhat4.3MEDIUM
vendor_ubuntu4.3MEDIUM
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Ubuntu
Samba vulnerabilities
vendor_ubuntu·2021-05-03·CVSS 4.3
CVE-2020-14318 [MEDIUM] Samba vulnerabilities
Title: Samba vulnerabilities
Summary: Several security issues were fixed in Samba.
Steven French discovered that Samba incorrectly handled ChangeNotify
permissions. A remote attacker could possibly use this issue to obtain file
name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind
requests. A remote attacker could possibly use this issue to cause winbind
to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain
invalid DNS records. A remote attacker could possibly use this issue to
cause the DNS server to crash, resulting in a denial of service.
(CVE-2020-14383)
Peter Eriksson discovered that Samba incorrectly handled certain negative
idmap cache entries. Th
Microsoft
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be un
vendor_msrc·2020-12-08·CVSS 4.3
CVE-2020-14318 [MEDIUM] CWE-266 A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be un
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is iden
Ubuntu
Samba vulnerabilities
vendor_ubuntu·2020-11-02·CVSS 4.3
CVE-2020-14383 [MEDIUM] Samba vulnerabilities
Title: Samba vulnerabilities
Summary: Several security issues were fixed in Samba.
Steven French discovered that Samba incorrectly handled ChangeNotify
permissions. A remote attacker could possibly use this issue to obtain file
name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind
requests. A remote attacker could possibly use this issue to cause winbind
to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain
invalid DNS records. A remote attacker could possibly use this issue to
cause the DNS server to crash, resulting in a denial of service.
(CVE-2020-14383)
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
vendor_redhat·2020-10-29·CVSS 4.3
CVE-2020-14318 [MEDIUM] CWE-266 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
A flaw was found in the way Samba handled file and directory permissions. This flaw allows an authenticated user to gain access to certain file and directory information, which otherwise would be unavailable. The highest threat from this vulnerability is to confidentiality.
Mitigation: As Samba internally opens an underlying file system handle on a directory when a client requests an open, even for FILE_READ_ATTRIBUTES then if the underlying file system permissions don't allow "r" (read) access for t
Debian
CVE-2020-14318: samba - A flaw was found in the way samba handled file and directory permissions. An aut...
vendor_debian·2020·CVSS 4.3
CVE-2020-14318 [MEDIUM] CVE-2020-14318: samba - A flaw was found in the way samba handled file and directory permissions. An aut...
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
Scope: local
bookworm: resolved (fixed in 2:4.13.2+dfsg-2)
bullseye: resolved (fixed in 2:4.13.2+dfsg-2)
forky: resolved (fixed in 2:4.13.2+dfsg-2)
sid: resolved (fixed in 2:4.13.2+dfsg-2)
trixie: resolved (fixed in 2:4.13.2+dfsg-2)
GHSA
GHSA-9qj5-fxqg-6g9p: A flaw was found in the way samba handled file and directory permissions
ghsa_unreviewed·2022-05-24
CVE-2020-14318 [MEDIUM] CWE-266 GHSA-9qj5-fxqg-6g9p: A flaw was found in the way samba handled file and directory permissions
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
OSV
samba vulnerabilities
osv·2021-05-03·CVSS 4.3
CVE-2020-14318 [MEDIUM] samba vulnerabilities
samba vulnerabilities
Steven French discovered that Samba incorrectly handled ChangeNotify
permissions. A remote attacker could possibly use this issue to obtain file
name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind
requests. A remote attacker could possibly use this issue to cause winbind
to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain
invalid DNS records. A remote attacker could possibly use this issue to
cause the DNS server to crash, resulting in a denial of service.
(CVE-2020-14383)
Peter Eriksson discovered that Samba incorrectly handled certain negative
idmap cache entries. This issue could result in certain users gaining
unauthorized ac
OSV
CVE-2020-14318: A flaw was found in the way samba handled file and directory permissions
osv·2020-12-03·CVSS 4.3
CVE-2020-14318 [MEDIUM] CVE-2020-14318: A flaw was found in the way samba handled file and directory permissions
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
OSV
samba vulnerabilities
osv·2020-11-02·CVSS 4.3
CVE-2020-14318 [MEDIUM] samba vulnerabilities
samba vulnerabilities
Steven French discovered that Samba incorrectly handled ChangeNotify
permissions. A remote attacker could possibly use this issue to obtain file
name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind
requests. A remote attacker could possibly use this issue to cause winbind
to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain
invalid DNS records. A remote attacker could possibly use this issue to
cause the DNS server to crash, resulting in a denial of service.
(CVE-2020-14383)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
bugzilla·2020-10-29·CVSS 4.3
CVE-2020-14318 [MEDIUM] CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify
As per upstream advisory:
The SMB1/2/3 protocols have a concept of "ChangeNotify", where a client can request file name notification on a directory handle when a condition such as "new file creation" or "file size change" or "file timestamp update" occurs.
A missing permissions check on a directory handle requesting ChangeNotify meant that a client with a directory handle open only for FILE_READ_ATTRIBUTES (minimal access rights) could be used to obtain change notify replies from the server. These replies contain information that should not be available to directory handles open for FILE_READ_ATTRIBUTE only.
Discussion:
Acknowledgments:
Name: the Samba project
Upstream: Steven French (Microsoft and the Sa
Bugzilla
CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify [fedora-all]
bugzilla·2020-10-29·CVSS 4.3
CVE-2020-14318 [MEDIUM] CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify [fedora-all]
CVE-2020-14318 samba: Missing handle permissions check in SMB1/2/3 ChangeNotify [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple sup
https://bugzilla.redhat.com/show_bug.cgi?id=1892631https://lists.debian.org/debian-lts-announce/2024/04/msg00015.htmlhttps://security.gentoo.org/glsa/202012-24https://www.samba.org/samba/security/CVE-2020-14318.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1892631https://lists.debian.org/debian-lts-announce/2024/04/msg00015.htmlhttps://security.gentoo.org/glsa/202012-24https://www.samba.org/samba/security/CVE-2020-14318.html
2020-12-03
Published