Attacker Value
Moderate
(1 user assessed)
Exploitability
Low
(1 user assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

Backport of the fix for CVE-2017-3137 leads to assertion failure in validator.c:1858

Disclosure Date: October 30, 2019
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

The Debian backport of the fix for CVE-2017-3137 leads to assertion failure in validator.c:1858; Affects Debian versions 9.9.5.dfsg-9+deb8u15; 9.9.5.dfsg-9+deb8u18; 9.10.3.dfsg.P4-12.3+deb9u5; 9.11.5.P4+dfsg-5.1 No ISC releases are affected. Other packages from other distributions who did similar backports for the fix for 2017-3137 may also be affected.

Add Assessment

1
Ratings
  • Attacker Value
    Medium
  • Exploitability
    Low
Technical Analysis

Probably not that interesting of a bug for an attacker. Basically you can DoS a BIND server. I sort of think most folks using BIND in a critical environment are likely using the ISC releases anyway. It is telling that the bug in this backport appears to have taken a year to discover.

CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • debian

Products

  • debian linux 10.0,
  • debian linux 8.0,
  • debian linux 9.0

Additional Info

Technical Analysis