Buffer overflow in Shadow Project
CVE-2017-12424
In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Shadow Project
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.debian.org/cgi-bin/bugreport.cgi (Third Party Advisory, Issue Tracking)
- security.gentoo.org/glsa/201710-16 (vendor-advisory, Third Party Advisory)
- github.com/shadow-maint/shadow/commit/954e3d2e7113e9ac06632aee3c69b8d818cc8952 (Patch, Third Party Advisory)
- bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675 (Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2021/03/msg00020.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-12424?
- CVE-2017-12424 is a critical-severity vulnerability in Shadow Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-08-04.
- How severe is CVE-2017-12424?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-12424 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.