openSUSE 16: libzypp / libzypp-devel / zypper / zypper-aptitude / zypper-log / etc (openSUSE-SU-2026:21808-1)

critical Nessus Plugin ID 344663

Synopsis

The remote openSUSE host is missing a security update.

Description

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:21808-1 advisory.

Security issue fixed:

- invalidating legacy libzypp unsigned-repository cache state [LIBZYPP-LEGACY-CACHE-01] (bsc#1274625).

Non security issues fixed:

- Econf parser adds tags in drop-in files outside any section to [main] (bsc#1272534).
- Need zypper option to disable services to fix Dockerfile builds in OBS (bsc#1257249).
- zypper loads repository data and installed packages prior to checking for required arguments (bsc#1274091).
- Zypper patch doesn't give enough details about conflicts (bsc#1277790).

Changes for libzypp:

Update to version 17.38.1:

- Prevent libgpgme from launching gpg-agents; we don't need them.
- defaultLoadSystem: Hand out the ZYpp::Ptr as return value.
- Log all solver problem rules (bsc#1277790) The log contains the most relevant problem rule, but sometimes it helps to know all rules associated with this problem. zypper shows them on demand as 'detail'. The log now remembers them as well.
- Replace popen cat/zcat with solv_xfopen for testcase loaders (fixes #749)
- repoGpgCheck: Strictly follow the repo_gpgcheck setting (bsc#1274625) There's been a legacy exception for unsigned repositories which were explicitly accepted in the past. After switching the repo_gpgcheck from off to on, they were allowed to stay unsigned until a first signed version was retrieved. From there on the handling was strict.
Now the handling is strict as soon as the repo_gpgcheck turned on. The next set of metadata retrieved must be signed.
- Iniparser: each new file starts in the unnamed section (bsc#1272534)
- Fix hasCredentials() to require both username AND password to be non-empty (bsc#1273242) This avoids an unnecessary 2nd 401 response sending just the username in case the username but no password is known. Now it immediately fetches the credentials from disk if no password is known.
- GPG Key hints in repoindex.xml require at least a long id to allow auto-import (bsc#1271730) The short Id (32bit/8byte) is not considered to be a safe identifier for a gpg key. A long id (64bit/16byte) or even better the full fingerprint is needed to identify the key.
- zypp: Improve Testcase Loading for MCP Tools.

Changes for zypper:

Update to version 1.14.99:

- Show solver problem details per default in not-interactive mode (bsc#1277790) This way they see all details when capturing zypper's output because the (d)etail button can't be pressed in not-interactive mode.
- Add --servicesd-dir global option to relocate /etc/zypp/services.d (bsc#1257249)
- info: check for missing positional args before systemSetup (bsc#1274091)
- Remove deprecated installRecommends option from zypper.conf.
The system wide default for all libzypp based applications is defined in zypp.conf(5). It is not recommended to define this in zypper exclusively.

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

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

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 344663

File Name: openSUSE-2026-21808-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 9/11/2026

Updated: 9/11/2026

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

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:libzypp-devel, p-cpe:/a:novell:opensuse:libzypp, p-cpe:/a:novell:opensuse:zypper-aptitude, p-cpe:/a:novell:opensuse:zypper-log, p-cpe:/a:novell:opensuse:zypper-needs-restarting, p-cpe:/a:novell:opensuse:zypper

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: 9/8/2026

Vulnerability Publication Date: 9/8/2026

Detections

Analytics