Improper input validation in Open-Xchange Dnsdist
CVE-2016-7069
An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
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:N/A:H.
EPSS exploit prediction
EPSS: 0.046 (91.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000
Affected products
- Open-Xchange Dnsdist — versions 1.2.0
- Powerdns Dnsdist
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/100509 (VDB Entry, Third Party Advisory, vdb-entry)
- dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-7069?
- CVE-2016-7069 is a medium-severity vulnerability in Open-Xchange Dnsdist, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2018-09-11.
- How severe is CVE-2016-7069?
- Medium severity. CVSS v3 base score is 5.9 out of 10.