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CVE-2018-16851

Description

Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Sambas AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.

Risk Information

Base Score
6.5
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
13.555

Associated Vulnerability

VulnerabilityOS Platform
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.8.4+dfsg-2ubuntu2.1_i386.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.8.4+dfsg-2ubuntu2.1_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.7.6+dfsg~ubuntu-0ubuntu2.5_i386.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.7.6+dfsg~ubuntu-0ubuntu2.5_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.3.11+dfsg-0ubuntu0.14.04.19_i386.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.3.11+dfsg-0ubuntu0.14.04.19_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.3.11+dfsg-0ubuntu0.16.04.18_i386.debLinux
SMB/CIFS file, print, and login server for Unix (USN-3827-1) samba_4.3.11+dfsg-0ubuntu0.16.04.18_amd64.debLinux
samba security update(DSA-4345-1) samba_4.5.12+dfsg-2+deb9u4_i386.debLinux
samba security update(DSA-4345-1) samba_4.5.12+dfsg-2+deb9u4_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234