CVE-2017-9527 json
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and…
published 2017-06-11 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-18458
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.
Patch / fix
- mruby Debian 14, Debian 13, Debian 12 1.3.0-1
debian advisories DEBIAN-CVE-2017-9527
- github.com/mruby/mruby@5c114c9 commit
- github.com/mruby/mruby/issues/3486 advisory
Exploit prediction
0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/mruby/mruby/issues/3486 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/mruby/mruby/commit/5c114c91d4ff31859fcd84cf8bf349b737b90d99
issue-tracking, patch, third-party-advisory
-
github.com
/mruby/mruby/issues/3486
exploit, issue-tracking, patch, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2022/05/msg00006.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2017-9527
- NVD CVE-2017-9527
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.