VulnerabilityModified
CVE-2017-1000372
A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at.
CRITICAL 9.8EPSS 3.96%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.96% probability · 90th percentile
- CISA KEV
- Not listed
- Affected
- openbsd/openbsd
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/99172Third Party Advisory, VDB Entry
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sigMailing List, Vendor Advisory
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtMailing List, Third Party Advisory
- http://www.securityfocus.com/bid/99172Third Party Advisory, VDB Entry
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/008_exec_subr.patch.sigMailing List, Vendor Advisory
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.