CVE-2019-14907

Home/CVE/All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set

CVE

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate.

(In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).

MEDIUM · CVSS 6.5 EPSS 0.10242

Schedule remediation

EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 7% of all CVEs by exploitation likelihood

Sigma rules8 YARA rules0

⬡

Weakness Classification

CWE-125Out-of-bounds Read

▤

Affected Products & Versions

samba>= 4.9.0 and < 4.9.18
samba>= 4.10.0 and < 4.10.12
samba>= 4.11.0 and < 4.11.5
fedoraproject fedoraall versions
redhat storageall versions
redhat enterprise linuxall versions
canonical ubuntu linuxall versions
synology directory serverall versions
Show all 12 affected productssynology router managerall versions
synology skynasall versions
synology diskstation managerall versions
debian linuxall versions

◈

Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighEnable LM Hash Storage - ProcCreation

producthighProtected Storage Service Access

producthighEnable LM Hash Storage

productmediumGoogle Cloud Storage Buckets Modified or Deleted

productmediumESXi Storage Information Discovery Via ESXCLI

productmediumWrite Protect For Storage Disabled

Show all 8 top matches

productlowGoogle Cloud Storage Buckets Enumeration

productlowSuspicious File Access to Browser Credential Storage

▣

Scoring & Timeline

6.5

MEDIUM · CVSS v3.1 · secalert@redhat.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD21 Jan 2020 · 06:15 PM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

⚑

Vendor Advisories

suse-csafopenSUSE-SU-2024:11365-1
suse-csafSUSE-SU-2020:2673-1
suse-csafopenSUSE-SU-2020:0122-1
suse-csafSUSE-SU-2020:0233-1
suse-csafSUSE-SU-2020:0223-1
Show all 11 vendor advisoriessuse-csafSUSE-SU-2020:0224-1
usnUSN-4244-1
rhsaRHSA-2020:3981Moderate
rhsaRHSA-2020:0943Moderate
rhsaRHSA-2020:1878Moderate
suse-csafSUSE-SU-2020:0152-1

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.htmlThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14907Issue TrackingThird Party Advisory

https://lists.debian.org/debian-lts-announce/2021/05/msg00023.htmlMailing ListThird Party Advisory

https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/

Show all 11 references

https://security.gentoo.org/glsa/202003-52Third Party Advisory

https://security.netapp.com/advisory/ntap-20200122-0001/Third Party Advisory

https://usn.ubuntu.com/4244-1/Third Party Advisory

https://www.samba.org/samba/security/CVE-2019-14907.htmlVendor Advisory

https://www.synology.com/security/advisory/Synology_SA_20_01Third Party Advisory

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