Published: 09 August 2017
Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.1 allows remote peers to cause a denial of service (CPU and possibly general resource consumption) via a list with a large number of elements.
From the Ubuntu security team
It was discovered that the Cap'n Proto utility has a buffer overflow vulnerability. An attacker could use this vulnerability to cause a crash or possibly execute arbitrary code.
CVSS 3 base score: 7.5
Fixed in 0.4.1.1, 0.5.1.1, and 0.6