CVE-2017-7892 — Improper Input Validation in Capnproto

CWE-20 — Improper Input Validation7 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.9%
top 24.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
CapnprotoDebian Capnproto
Timeline
PublishedApr 17
Latest updateMay 17

Description

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.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/capnproto< capnproto 0.6.1-1 (bookworm)
▶Debiancapnproto/capnproto< 0.6.1-1+3

🔴Vulnerability Details

2
GHSA
GHSA-q5jr-ph84-c3r5: Sandstorm Cap'n Proto before 0↗2022-05-17
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OSV
CVE-2017-7892: Sandstorm Cap'n Proto before 0↗2017-04-17
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📋Vendor Advisories

1
Debian
CVE-2017-7892: capnproto - Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler...↗2017
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💬Community

3
Bugzilla
CVE-2017-7892 capnproto: Integer overflow due to a malicious message [fedora-all]↗2017-04-19
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Bugzilla
CVE-2017-7892 capnproto: Integer overflow due to a malicious message↗2017-04-19
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Bugzilla
CVE-2017-7892 capnproto: Integer overflow due to a malicious message [epel-7]↗2017-04-19
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CVE-2017-7892 — Improper Input Validation in Capnproto | cvebase