Buffer overflow in Dosfstools Project
CVE-2016-4804
The read_boot function in boot.c in dosfstools before 4.0 allows attackers to cause a denial of service (crash) via a crafted filesystem, which triggers a heap-based buffer overflow in the (1) read_fat function or an out-of-bounds heap read in (2) get_fat function.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Dosfstools Project
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-updates/2016-06/msg00001.html (vendor-advisory)
- github.com/dosfstools/dosfstools/issues/25 (Patch, Vendor Advisory)
- blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesse… (Patch)
- www.ubuntu.com/usn/USN-2986-1 (vendor-advisory)
- github.com/dosfstools/dosfstools/issues/26 (Patch, Vendor Advisory)
- lists.opensuse.org/opensuse-updates/2016-09/msg00014.html (vendor-advisory)
- www.securityfocus.com/bid/90311 (vdb-entry)
- github.com/dosfstools/dosfstools/commit/e8eff147e9da1185f9afd5b25948153a3b97cf52
- lists.debian.org/debian-lts-announce/2020/05/msg00028.html (mailing-list)
Frequently asked questions
- What is CVE-2016-4804?
- CVE-2016-4804 is a medium-severity vulnerability in Dosfstools Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2016-06-03.
- How severe is CVE-2016-4804?
- Medium severity. CVSS v3 base score is 6.2 out of 10.
- Is CVE-2016-4804 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.