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Echo: samba: security update to 2:4.6.5+dfsg-4

high Tenable Cloud Security Plugin ID 462849

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it
 obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In
 _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in
 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides
 an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal
 and other products that embed Heimdal code; it does not apply to other instances in which this part of the
 Kerberos 5 protocol specification is violated. (CVE-2017-11103)

Solution

Update the samba library and its related packages to version 2:4.6.5+dfsg-4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2017-11103

Plugin Details

Severity: High

ID: 462849

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2017-11103

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/2/2026

Vulnerability Publication Date: 7/12/2017

Reference Information

CVE: CVE-2017-11103

IAVA: 2017-A-0231-S