Vulnerability Details CVE-2017-7892
Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler optimization. A remote attacker can trigger a segfault in a 32-bit libcapnp application because Cap'n Proto relies on pointer arithmetic calculations that overflow. An example compiler with optimization that elides a bounds check in such calculations is Apple LLVM version 8.1.0 (clang-802.0.41). The attack vector is a crafted far pointer within a message.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 73.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2017-7892
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cpe:2.3:a:capnproto:capnproto:0.1.0
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cpe:2.3:a:capnproto:capnproto:0.2.0
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cpe:2.3:a:capnproto:capnproto:0.2.1
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cpe:2.3:a:capnproto:capnproto:0.3.0
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cpe:2.3:a:capnproto:capnproto:0.4.0
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cpe:2.3:a:capnproto:capnproto:0.4.1
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cpe:2.3:a:capnproto:capnproto:0.4.1.1
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cpe:2.3:a:capnproto:capnproto:0.4.1.2
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cpe:2.3:a:capnproto:capnproto:0.5.0
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cpe:2.3:a:capnproto:capnproto:0.5.1
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cpe:2.3:a:capnproto:capnproto:0.5.1.1
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cpe:2.3:a:capnproto:capnproto:0.5.1.2
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cpe:2.3:a:capnproto:capnproto:0.5.2
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cpe:2.3:a:capnproto:capnproto:0.5.3