CVE-2017-12424
Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.66% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- shadow project/shadow · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756630Issue Tracking, Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675Issue Tracking, Third Party Advisory
- https://github.com/shadow-maint/shadow/commit/954e3d2e7113e9ac06632aee3c69b8d818cc8952Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00020.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201710-16Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756630Issue Tracking, Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675Issue Tracking, Third Party Advisory
- https://github.com/shadow-maint/shadow/commit/954e3d2e7113e9ac06632aee3c69b8d818cc8952Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00020.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201710-16Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.