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 p...
HighCVSS 7.5
EPSS 1.8%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/capnproto(Debian:12) | < 0.6.1-1 | 0.6.1-1 |
| debian/capnproto(Debian:13) | < 0.6.1-1 | 0.6.1-1 |
| debian/capnproto(Debian:14) | < 0.6.1-1 | 0.6.1-1 |
| capnproto | <= 0.5.3 | No fix listed |
References
- Debian Security Tracker CVE-2017-7892 vendor-advisory
- github.com third-party-advisory
- bugs.debian.org issue-tracking