CVE-2017-9527
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial...
CVE-2017-9527 is a high vulnerability (CVSS 7.8) in Mruby, published June 11, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 62nd percentile. Fixed in mruby 1.3.0-1.
- Severity
- 7.8 HighCVSS 3.1, NVD
- Exploit chance
- 0.97%EPSS, 62nd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.3.0-1mruby +3 more
Description
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mrubyDebian:12 | before 1.3.0-1 | 1.3.0-1 |
mrubyDebian:13 | before 1.3.0-1 | 1.3.0-1 |
mrubyDebian:14 | before 1.3.0-1 | 1.3.0-1 |
mrubyDebian:9 From an advisory covering 6 CVEs | before 1.2.0+20161228+git30d5424a-1+deb9u1, plus listed versions 1.2.0+20161228+git30d5424a-1 | 1.2.0+20161228+git30d5424a-1+deb9u1 |
What each source reports
NVD Score used
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.
- Record
CVE-2017-9527- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2017-9527- Updated
- 2026-11-02
EUVDEUVD-2017-18458No score
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.
- Record
EUVD-2017-18458- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fxr6-v647-jgmq
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial...
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.
- Record
GHSA-fxr6-v647-jgmq- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2017-9527- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-9527
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.
- Record
DEBIAN-CVE-2017-9527- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-9527
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.
- Record
UBUNTU-CVE-2017-9527- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/mruby/mruby/issues/3486
lists.debian.org/debian-lts-announce/2022/05/msg00006.html
nvd.nist.gov/vuln/detail/CVE-2017-9527
security-tracker.debian.org/tracker/CVE-2017-9527
ubuntu.com/security/CVE-2017-9527
cve.org/CVERecord?id=CVE-2017-9527