There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - An issue was discovered in LINBIT csync2 through 2.0. csync_daemon_session in daemon.c neglects to force a
    failure of a hello command when the configuration requires use of SSL. (CVE-2019-15522)

  - An issue was discovered in LINBIT csync2 through 2.0. It does not correctly check for the return value
    GNUTLS_E_WARNING_ALERT_RECEIVED of the gnutls_handshake() function. It neglects to call this function
    again, as required by the design of the API. (CVE-2019-15523)

It was discovered that csync2, a cluster synchronization tool, did not correctly check for the return value from GnuTLS security routines. It neglected to repeatedly call this function as required by the design of the API.

For Debian 9 'Stretch', this problem has been fixed in version 2.0-8-g175a01c-4+deb9u2.

We recommend that you upgrade your csync2 packages.

For the detailed security status of csync2 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/csync2

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1952-1 advisory.

    - CVE-2019-15522: Fixed an issue where daemon fails to enforce TLS (bsc#1147137)
    - CVE-2019-15523: Fixed an incorrect TLS handshake error handling (bsc#1147139)

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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in LINBIT csync2 through 2.0. It does not correctly check for the return value     GNUTLS_E_WARNING_ALERT_RECEIVED of the gnutls_handshake() function. It neglects to call this function     again, as required by the design of the API. (CVE-2019-15523)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1858-1 advisory.

    - CVE-2019-15522: Fixed an issue where daemon fails to enforce TLS (bsc#1147137)
    - CVE-2019-15523: Fixed an incorrect TLS handshake error handling (bsc#1147139)

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.

This update for csync2 fixes the following issues :

  - CVE-2019-15522: Fixed an issue where daemon fails to     enforce TLS (bsc#1147137)

  - CVE-2019-15523: Fixed an incorrect TLS handshake error     handling (bsc#1147139)

This update was imported from the SUSE:SLE-15:Update update project.

ID	Name	Product	Family	Published	Updated	Severity
403924	Alpine: multiple csync2 packages: security update to 2.0-r3	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	critical
400181	Alpine: multiple csync2 packages: security update to 2.0-r2 (deprecated)	Tenable Cloud Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	critical
400181	Alpine: multiple csync2 packages: security update to 2.0-r2 (deprecated)	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	8/16/2023	7/2/2026	critical
403924	Alpine: multiple csync2 packages: security update to 2.0-r3	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	critical
144725	Debian DLA-2515-1 : csync2 security update	Nessus	Debian Local Security Checks	1/5/2021	1/31/2024	medium
150742	SUSE SLES12 Security Update : csync2 (SUSE-SU-2021:1952-1)	Nessus	SuSE Local Security Checks	6/12/2021	6/25/2026	critical
258199	Linux Distros Unpatched Vulnerability : CVE-2019-15523	Nessus	Misc.	8/30/2025	5/27/2026	medium
150695	SUSE SLES15 Security Update : csync2 (SUSE-SU-2021:1858-1)	Nessus	SuSE Local Security Checks	6/11/2021	6/25/2026	critical
150474	openSUSE Security Update : csync2 (openSUSE-2021-853)	Nessus	SuSE Local Security Checks	6/10/2021	12/27/2023	critical

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