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CVE-2021-3671

Description

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

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
1.55

Associated Vulnerability

VulnerabilityOS Platform
SMB/CIFS file, print, and login server for Unix (USN-5142-1) samba_4.13.14+dfsg-0ubuntu0.20.04.1_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-5142-1) samba_4.13.14+dfsg-0ubuntu0.21.04.1_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-5142-1) samba_4.13.14+dfsg-0ubuntu0.21.10.1_amd64.debLinux
SMB/CIFS file, print, and login server for Unix (USN-5174-1) samba_4.7.6+dfsg~ubuntu-0ubuntu2.26_i386.debLinux
SMB/CIFS file, print, and login server for Unix (USN-5174-1) samba_4.7.6+dfsg~ubuntu-0ubuntu2.26_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-kcm_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-kcm_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-kdc_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-kdc_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-clients_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-clients_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-servers_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) heimdal-servers_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libkdc2-heimdal_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libkdc2-heimdal_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libgssapi3-heimdal_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libgssapi3-heimdal_7.5.0+dfsg-1ubuntu0.1_amd64.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libkrb5-26-heimdal_7.5.0+dfsg-1ubuntu0.1_i386.debLinux
Heimdal Kerberos Network Authentication Protocol (USN-5675-1) libkrb5-26-heimdal_7.5.0+dfsg-1ubuntu0.1_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