What’s Vulnerable › Vulnerabilities

CVE-2019-15523

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-30 · updated 2026-06-17
• Weakness: CWE-252

Description

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.

Affected products

• Debian Linux: 9.0
• Linbit Csync2: through 2.0

References

• https://github.com/LINBIT/csync2/pull/13/commits/92742544a56bcbcd9ec99ca15f898b31797e39e2
• https://lists.debian.org/debian-lts-announce/2021/01/msg00003.html
• https://github.com/LINBIT/csync2/pull/13/commits/92742544a56bcbcd9ec99ca15f898b31797e39e2
• https://lists.debian.org/debian-lts-announce/2021/01/msg00003.html

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