Vulnerability CVE-2017-9106: Information

Description

An issue was discovered in adns before 1.5.2. adns_rr_info mishandles a bogus *datap. The general pattern for formatting integers is to sprintf into a fixed-size buffer. This is correct if the input is in the right range; if it isn't, the buffer may be overrun (depending on the sizes of the types on the current platform). Of course the inputs ought to be right. And there are pointers in there too, so perhaps one could say that the caller ought to check these things. It may be better to require the caller to make the pointer structure right, but to have the code here be defensive about (and tolerate with an error but without crashing) out-of-range integer values. So: it should defend each of these integer conversion sites with a check for the actual permitted range, and return adns_s_invaliddata if not. The lack of this check causes the SOA sign extension bug to be a serious security problem: the sign extended SOA value is out of range, and overruns the buffer when reconverted. This is related to sign extending SOA 32-bit integer fields, and use of a signed data type.

Severity: HIGH (7.5) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published: June 18, 2020
Modified: Nov. 7, 2023
Error type identifier: CWE-119

Fixed packages

Package name
Branch
Fixed in version
Version from repository
Errata ID
Task #
State
adnssisyphus1.5.2-alt11.6.0-alt2ALT-PU-2020-2177-1253454Fixed
adnsp101.5.2-alt11.6.0-alt1ALT-PU-2020-2177-1253454Fixed
adnsp91.5.2-alt11.5.2-alt1ALT-PU-2020-2191-1253455Fixed
adnsp81.5.2-alt11.5.2-alt1ALT-PU-2020-2213-1253457Fixed
adnsc10f11.5.2-alt11.6.0-alt1ALT-PU-2020-2177-1253454Fixed
adnsc9f21.5.2-alt11.5.2-alt1ALT-PU-2020-2191-1253455Fixed

References to Advisories, Solutions, and Tools

    1. Configuration 1

      cpe:2.3:a:gnu:adns:*:*:*:*:*:*:*:*
      End excliding
      1.5.2

      Configuration 2

      cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

      cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*