Vulnerability in Red Hat Enterprise Linux
CVE-2015-1777
rhnreg_ks in Red Hat Network Client Tools (aka rhn-client-tools) on Red Hat Gluster Storage 2.1 and Enterprise Linux (RHEL) 5, 6, and 7 does not properly validate hostnames in X.509 certificates from SSL servers, which allows remote attackers to prevent system registration via a man-in-the-middle attack.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.012 (67.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat Gluster Storage — versions 2.1
- Red Hat Rhn-Client-Tools
Weakness classification (CWE)
References
- www.securityfocus.com/bid/72943 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- www.openwall.com/lists/oss-security/2015/03/04/7 (mailing-list, Mailing List)
Frequently asked questions
- What is CVE-2015-1777?
- CVE-2015-1777 is a medium-severity vulnerability in Red Hat Enterprise Linux, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2018-04-12.
- How severe is CVE-2015-1777?
- Medium severity. CVSS v3 base score is 5.9 out of 10.