What’s Vulnerable › Vulnerabilities

CVE-2015-2311

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% 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-191

Description

Integer underflow in Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.1 might allow remote peers to cause a denial of service or possibly obtain sensitive information from memory or execute arbitrary code via a crafted message.

Affected products

• capnproto: through 0.4.1.0; 0.5.0.0, 0.5.1.0

References

• http://www.openwall.com/lists/oss-security/2015/03/17/3
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780566
• https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-02-1-c%2B%2B-integer-underflow.md
• https://github.com/capnproto/capnproto/commit/26bcceda72372211063d62aab7e45665faa83633
• http://www.openwall.com/lists/oss-security/2015/03/17/3
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780566
• https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-02-1-c%2B%2B-integer-underflow.md
• https://github.com/capnproto/capnproto/commit/26bcceda72372211063d62aab7e45665faa83633

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