openSUSE 16: jline3 / jline3-builtins / jline3-console / jline3-console-ui / etc (openSUSE-SU-2026:21423-1)

high Nessus Plugin ID 329519

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Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21423-1 advisory.

- CVE-2026-56740: unauthenticated remote memory exhaustion via unbounded Telnet `NEW-ENVIRON` variables (bsc#1269021).
- CVE-2026-56741: unauthenticated remote DoS via Unbounded Telnet NAWS Terminal Geometry (bsc#1270083).

Changes for jline3:

- Update to upstream version 3.30.15

- fix: guard regex matching against catastrophic backtracking (ReDoS) (#2018, backport of #2012):
* Adds SafeRegex utility with TimeoutCharSequence to enforce wall-clock deadlines during regex matching
* Fixes 8 locations across terminal, reader, and builtins where user-controlled input could trigger catastrophic backtracking
* Addresses GHSA-r2xf-8xr9-62gw, GHSA-2v9w-34q6-wpqx, GHSA-ph9c-7hw9-vhhw, GHSA-5q95-hrpc-m3w3 + fix: backport security hardening (#1986, #1995):
* Create persisted history file with owner-only permissions
* Use exclusive create for extracted native library temp files + fix: warn on insecure permissions when history file created concurrently

Tenable has extracted the preceding description block directly from the SUSE 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 packages.

Plugin Details

Severity: High

ID: 329519

File Name: openSUSE-2026-21423-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/25/2026

Updated: 7/25/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.78

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-2026-56741

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

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:jline3-builtins, p-cpe:/a:novell:opensuse:jline3-console-ui, p-cpe:/a:novell:opensuse:jline3-console, p-cpe:/a:novell:opensuse:jline3-curses, p-cpe:/a:novell:opensuse:jline3-jansi-core, p-cpe:/a:novell:opensuse:jline3-jansi, p-cpe:/a:novell:opensuse:jline3-javadoc, p-cpe:/a:novell:opensuse:jline3-native, p-cpe:/a:novell:opensuse:jline3-reader, p-cpe:/a:novell:opensuse:jline3-remote-telnet, p-cpe:/a:novell:opensuse:jline3-style, p-cpe:/a:novell:opensuse:jline3-terminal-jansi, p-cpe:/a:novell:opensuse:jline3-terminal-jna, p-cpe:/a:novell:opensuse:jline3-terminal-jni, p-cpe:/a:novell:opensuse:jline3-terminal, p-cpe:/a:novell:opensuse:jline3

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 6/18/2026

Reference Information

CVE: CVE-2026-56740, CVE-2026-56741

Detections

Analytics