Description
Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.2, when an application invokes the totalSize method on an object reader, allows remote peers to cause a denial of service (CPU consumption) via a crafted small message, which triggers a "tight" for loop. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-2312.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_confirm
https://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868
Third Party Advisory x_refsource_confirm
https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/03/17/3
Mailing List, Third Party Advisory x_refsource_misc
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780568
Scores
CVSS v3
7.5
EPSS
0.0066
EPSS Percentile
71.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
Status
published
Products (4)
capnproto/capnproto
0.5.0.0
capnproto/capnproto
0.5.1.0
capnproto/capnproto
0.5.1.1
capnproto/capnproto
< 0.4.1.0
Published
Aug 09, 2017
Tracked Since
Feb 18, 2026