CVE-2015-2809

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-04-01 · updated 2026-06-17
Weakness: CWE-200

Description

The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.

Affected products

Synology DiskStation Manager: through 3.0

References

http://www.kb.cert.org/vuls/id/550620
http://www.kb.cert.org/vuls/id/BLUU-9TLSHD
http://www.securityfocus.com/bid/73683
http://www.kb.cert.org/vuls/id/550620
http://www.kb.cert.org/vuls/id/BLUU-9TLSHD
http://www.securityfocus.com/bid/73683

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