Detections
Analytics

Echo: c-ares-1.29.0: security update to 1.29.0+e1c-ares-1.34.6: security update to 1.34.6+e1c-ares-1.7.4: security update to 1.7.4+e1

high Tenable Cloud Security Plugin ID 476245

Description

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

 - c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward DNS
 compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS
 server can send a response containing a long descending pointer chain and many resource records whose NAME
 or RDATA fields refer to the chain, causing repeated decompression work that grows quadratically with
 message size. A single crafted response can stall the single-threaded c-ares event loop and deny DNS
 resolution, without causing memory corruption or information disclosure. This issue is fixed in version
 1.34.7. (CVE-2026-69184)

Solution

Update the c-ares-1.29.0 library and its related packages to version 1.29.0+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-69184

Plugin Details

Severity: High

ID: 476245

Version: Revision 1.1

Type: Local

Published: 10/20/2026

Updated: 10/20/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-69184

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: 10/20/2026

Vulnerability Publication Date: 8/17/2026

Reference Information

CVE: CVE-2026-69184