Improper input validation in Capnproto
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.018 (76.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Capnproto
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7892?
- CVE-2017-7892 is a high-severity vulnerability in Capnproto, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-04-17.
- How severe is CVE-2017-7892?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-7892 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.