Buffer overflow in Linux Kernel
CVE-2017-1000363
Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Linux Kernel — versions 4.12
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- R0B1NL1N/linux-kernel-exploitation
- Technoashofficial/kernel-exploitation-linux
- kdn111/linux-kernel-exploitation
- khanhdn111/linux-kernel-exploitation
- khanhdz-06/linux-kernel-exploitation
- khanhdz191/linux-kernel-exploitation
- khanhhdz/linux-kernel-exploitation
- khanhhdz06/linux-kernel-exploitation
- khanhnd123/linux-kernel-exploitation
References
- www.securityfocus.com/bid/98651 (VDB Entry, Third Party Advisory, vdb-entry)
- alephsecurity.com/vulns/aleph-2017023 (Third Party Advisory)
- www.debian.org/security/2017/dsa-3945 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-1000363?
- CVE-2017-1000363 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2017-07-17.
- How severe is CVE-2017-1000363?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-1000363 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.