vulnwire
5.9med

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.

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.9
v3.0 · CNA
CISA KEV
No
not known exploited
EPSS
4.6%
percentile 92%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

4.58% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD3.07.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Open-Xchange dnsdist

Classification

Weakness
  • CWE-20 Improper Input Validation

References

  • bugzilla.redhat.com /show_bug.cgi?id=CVE-2016-7069 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/100509 · vdb-entry, x_refsource_BID, x_transferred
  • dnsdist.org /security-advisories/powerdns-advisory-for-dnsdist-2017-01.html · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.