NULL pointer dereference in OpenBSD
CVE-2001-1559
The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- OpenBSD — versions 2.9, 3.0
Weakness classification (CWE)
References
- www.iss.net/security_center/static/7690.php (vdb-entry, Broken Link)
- archives.neohapsis.com/archives/bugtraq/2001-12/0014.html (mailing-list, Exploit, Broken Link)
- monkey.org/openbsd/archive/tech/0112/msg00015.html (mailing-list, Exploit, Broken Link)
Frequently asked questions
- What is CVE-2001-1559?
- CVE-2001-1559 is a medium-severity vulnerability in OpenBSD, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2001-12-31.
- How severe is CVE-2001-1559?
- Medium severity. CVSS v3 base score is 5.5 out of 10.