Detections
Analytics

Echo: libxml2-2.9.1: security update to 2.9.1+e1

medium Tenable Cloud Security Plugin ID 476447

Description

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

 - The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of
 service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict
 memory usage to what is required for a legitimate file. (CVE-2017-18258)

Solution

Update the libxml2-2.9.1 library and its related packages to version 2.9.1+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2017-18258

Plugin Details

Severity: Medium

ID: 476447

Version: Revision 1.1

Type: Local

Published: 10/21/2026

Updated: 10/21/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2017-18258

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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: 10/21/2026

Vulnerability Publication Date: 4/8/2018

Reference Information

CVE: CVE-2017-18258