CVE-2015-2313

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-08-09 · updated 2026-06-17
Weakness: CWE-400

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.

Affected products

capnproto: through 0.4.1.0; 0.5.0.0, 0.5.1.0, 0.5.1.1

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
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

Get alerted when CVE-2015-2313 or the next vulnerability affects your stack