Detections
Analytics

EulerOS 2.0 SP15 : libarchive (EulerOS-SA-2026-2445)

high Nessus Plugin ID 323178

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the libarchive packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.(CVE-2026-4426)

 A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.(CVE-2026-4424)

Tenable has extracted the preceding description block directly from the EulerOS libarchive security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected libarchive packages.

See Also

http://www.nessus.org/u?282db379

Plugin Details

Severity: High

ID: 323178

File Name: EulerOS_SA-2026-2445.nasl

Version: 1.1

Type: Local

Published: 6/27/2026

Updated: 6/27/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-4426

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:H/I:N/A:N

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

CVSS Score Source: CVE-2026-4424

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:libarchive-help, cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:libarchive, p-cpe:/a:huawei:euleros:libarchive-devel

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 3/19/2026

Reference Information

CVE: CVE-2026-4424, CVE-2026-4426

IAVA: 2026-A-0270