Information disclosure in OpenBSD OpenSSH

CVE-2011-4327

ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, which allows local users to obtain sensitive key information via the ptrace system call.

Vulnerability class: Information Disclosure

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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2011-4327: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2011-4327?
CVE-2011-4327 is a medium-severity vulnerability in OpenBSD OpenSSH, classified under Information Disclosure. CVSS score: 5.5/10. Published 2014-02-03.
How severe is CVE-2011-4327?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2011-4327 known to be exploited?
25 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.