CVE-2018-20742 json
An issue was discovered in UC Berkeley RISE Opaque before 2018-12-01.
published 2019-01-24 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13287
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
An issue was discovered in UC Berkeley RISE Opaque before 2018-12-01. There is no boundary check on ocall_malloc. The return value could be a pointer to enclave memory. It could cause an arbitrary enclave memory write.
Patch / fix
- ucbrise opaque 2018-12-01
- github.com/ucbrise/opaque@5ddda15 commit
- github.com/ucbrise/opaque/issues/66 advisory
Exploit prediction
1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ucbrise/opaque/issues/66 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/ucbrise/opaque/commit/5ddda15d89f5ac82f4416208c5319ace4aecdc36
patch, third-party-advisory
-
github.com
/ucbrise/opaque/issues/66
exploit, patch, third-party-advisory
Sources
- CVE List CVE-2018-20742
- NVD CVE-2018-20742
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