Auth bypass in Cryptsetup Project
CVE-2016-4484
The Debian initrd script for the cryptsetup package 2:1.7.3-2 and earlier allows physically proximate attackers to gain shell access via many log in attempts with an invalid password.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2016/11/14/13 (mailing-list, Mailing List, Third Party Advisory)
- hmarco.org/bugs/CVE-2016-4484/CVE-2016-4484_cryptsetup_initrd_shell.html (Technical Description, Exploit, Third Party Advisory, Mitigation)
- www.openwall.com/lists/oss-security/2016/11/15/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/11/15/4 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/94315 (vdb-entry)
- gitlab.com/cryptsetup/cryptsetup/commit/ef8a7d82d8d3716ae9b58179590f7908981fa0cb (Patch)
- www.openwall.com/lists/oss-security/2016/11/16/6 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-4484?
- CVE-2016-4484 is a medium-severity vulnerability in Cryptsetup Project, classified under Improper Authentication. CVSS score: 6.8/10. Published 2017-01-23.
- How severe is CVE-2016-4484?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2016-4484 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.