Vulnerability CVE-2015-2313
Published: 2017-08-09   Modified: 2017-08-10

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.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Capnproto -> Capnproto 

 References:
http://www.openwall.com/lists/oss-security/2015/03/17/3
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780568
https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md
https://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868
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