Debian update for samba



Published: 2024-07-11
Risk Medium
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2022-2127
CVE-2022-3437
CVE-2023-4091
CVE-2023-34966
CVE-2023-34967
CVE-2023-34968
CWE-ID CWE-125
CWE-122
CWE-264
CWE-835
CWE-843
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Debian Linux
Operating systems & Components / Operating system

samba (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU78577

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2127

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information or perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in winbindd_pam_auth_crap.c in winbind AUTH_CRAP when performing NTLM authentication. A remote attacker can trigger an out-of-bounds read error and gain access to sensitive information or crash the server.

Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

EUVDB-ID: #VU68701

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3437

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. A remote user can send specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.


Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU81872

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4091

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to truncate read-only files.

The vulnerability exists due to an error in the way SMB protocol implementation in Samba handles file operations. A remote user can request read-only access to files and then truncate them to 0 bytes by opening files with OVERWRITE disposition when using the acl_xattr Samba VFS module with the smb.conf setting "acl_xattr:ignore system acls = yes".

Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Infinite loop

EUVDB-ID: #VU78574

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34966

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when parsing Spotlight mdssvc RPC packets. A remote attacker can consume all available system resources and cause denial of service conditions on servers where Spotlight is explicitly enabled globally or on individual shares with "spotlight = yes".

Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Type Confusion

EUVDB-ID: #VU78575

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34967

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a type confusion error when parsing Spotlight mdssvc RPC packets. A remote attacker can send specially crafted data to the server, trigger a type confusion error and crash the server.

Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Information disclosure

EUVDB-ID: #VU78576

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34968

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can send a specially crafted RPC request to the server and obtain real server-side share path.

Mitigation

Update samba package to version 2:4.13.13+dfsg-1~deb11u6.

Vulnerable software versions

Debian Linux: All versions

samba (Debian package): before 2:4.13.13+dfsg-1~deb11u6

External links

http://lists.debian.org/debian-security-announce/2024/msg00055.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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