Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
First Last Prev Next    This bug is not in your last search results.
Bug 1510570 - (CVE-2017-15107) CVE-2017-15107 dnsmasq: Improper validation of wildcard synthesized NSEC records
CVE-2017-15107 dnsmasq: Improper validation of wildcard synthesized NSEC records
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20180119,repor...
: Security
Depends On: 1536903
Blocks: 1507052
  Show dependency tree / graph
 
Reported: 2017-11-07 11:59 EST by Adam Mariš
Modified: 2018-02-12 04:00 EST (History)
25 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in Dnsmasq's implementation of DNSSEC. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2018-01-21 20:44:13 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

  None (edit)
Description Adam Mariš 2017-11-07 11:59:10 EST 
A vulnerability in DNSSEC implementation of Dnsmasq was found. Processing of wildcard synthesized NSEC records may result in improper validation for non-existance in some implementations of DNSSEC. While synthesis of NSEC records is allowed by RFC4592, the synthesized owner names should not be used in the NSEC processing.
Comment 1 Adam Mariš 2017-11-07 11:59:13 EST 
Acknowledgments:

Name: Ralph Dolmans (NLnet Labs), Karst Koymans (University of Amsterdam)
Comment 3 Doran Moppert 2018-01-21 20:41:40 EST 
Statement:

Versions of Dnsmasq shipped with Red Hat Enterprise Linux are built without DNSSEC support, so they are not affected by this issue.
Comment 4 Doran Moppert 2018-01-21 20:42:49 EST 
Created dnsmasq tracking bugs for this issue:

Affects: fedora-all [bug 1536903]
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.