Auth bypass in Dell Idrac6 Bmc
CVE-2013-4783
The Dell iDRAC6 with firmware 1.x before 1.92 and 2.x and 3.x before 3.42, and iDRAC7 with firmware before 1.23.23, allows remote attackers to bypass authentication and execute arbitrary IPMI commands by using cipher suite 0 (aka cipher zero) and an arbitrary password. NOTE: the vendor disputes the significance of this issue, stating "DRAC's are intended to be on a separate management network; they are not designed nor intended to be placed on or connected to the Internet."
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 10.0 (High). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.034 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- en.community.dell.com/techcenter/systems-management/w/wiki/4929.how-to-check-if…
- www.wired.com/threatlevel/2013/07/ipmi/
- www.metasploit.com/modules/auxiliary/scanner/ipmi/ipmi_cipher_zero
- osvdb.org/show/osvdb/93039 (vdb-entry)
- fish2.com/ipmi/cipherzero.html
- lists.gnu.org/archive/html/freeipmi-devel/2013-02/msg00013.html (mailing-list)
Frequently asked questions
- What is CVE-2013-4783?
- CVE-2013-4783 is a vulnerability in Dell Idrac6 Bmc, classified under Improper Authentication. Published 2013-07-08.
- Is CVE-2013-4783 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.