Bug 2209501 (CVE-2023-31147) - CVE-2023-31147 c-ares: Insufficient randomness in generation of DNS query IDs
Summary: CVE-2023-31147 c-ares: Insufficient randomness in generation of DNS query IDs
Keywords:
Status: NEW
Alias: CVE-2023-31147
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2209539 2209540 2209541 2209543 2209544 2209545 2209546 2209547 2209542 2209549 2209550 2209551 2209552 2209553 2209555 2211040 2211041 2211042 2211043 2211044 2212440 2212441 2214632
Blocks: 2209110
TreeView+ depends on / blocked
 
Reported: 2023-05-24 04:08 UTC by Sandipan Roy
Modified: 2024-02-01 09:01 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in c-ares. This issue occurs when /dev/urandom or RtlGenRandom() are unavailable, c-ares will use rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand(), so it will generate predictable output.
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2023:3603 0 None None None 2023-06-14 18:03:10 UTC
Red Hat Product Errata RHBA-2023:3657 0 None None None 2023-06-19 00:24:48 UTC
Red Hat Product Errata RHBA-2023:3666 0 None None None 2023-06-19 13:27:37 UTC
Red Hat Product Errata RHBA-2023:4045 0 None None None 2023-07-13 01:00:19 UTC
Red Hat Product Errata RHBA-2023:4046 0 None None None 2023-07-13 01:06:14 UTC
Red Hat Product Errata RHBA-2023:4077 0 None None None 2023-07-13 11:35:23 UTC
Red Hat Product Errata RHBA-2023:4078 0 None None None 2023-07-13 11:42:14 UTC
Red Hat Product Errata RHBA-2023:4098 0 None None None 2023-07-17 06:51:26 UTC
Red Hat Product Errata RHSA-2023:3577 0 None None None 2023-06-14 07:27:19 UTC
Red Hat Product Errata RHSA-2023:3586 0 None None None 2023-06-14 08:39:12 UTC
Red Hat Product Errata RHSA-2023:4033 0 None None None 2023-07-12 08:26:16 UTC
Red Hat Product Errata RHSA-2023:4034 0 None None None 2023-07-12 08:25:32 UTC
Red Hat Product Errata RHSA-2023:4035 0 None None None 2023-07-12 08:25:21 UTC
Red Hat Product Errata RHSA-2023:4036 0 None None None 2023-07-12 08:12:37 UTC
Red Hat Product Errata RHSA-2023:4039 0 None None None 2023-07-12 08:24:19 UTC
Red Hat Product Errata RHSA-2023:6635 0 None None None 2023-11-07 08:22:20 UTC

Description Sandipan Roy 2023-05-24 04:08:42 UTC 
Description of issue(s):
When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output.
Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation.
No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available.

CVE-2023-31147 Insufficient randomness in generation of DNS query IDs (https://github.com/c-ares/c-ares/security/advisories/GHSA-8r8p-23f3-64c2)
Comment 1 Sandipan Roy 2023-05-24 04:23:15 UTC 
Created c-ares tracking bugs for this issue:

Affects: fedora-all [bug 2209542]


Created mingw-c-ares tracking bugs for this issue:

Affects: fedora-all [bug 2209543]


Created nodejs tracking bugs for this issue:

Affects: epel-7 [bug 2209539]


Created nodejs16 tracking bugs for this issue:

Affects: fedora-all [bug 2209544]


Created nodejs18 tracking bugs for this issue:

Affects: fedora-all [bug 2209545]


Created nodejs20 tracking bugs for this issue:

Affects: fedora-all [bug 2209546]


Created nodejs:13/nodejs tracking bugs for this issue:

Affects: epel-8 [bug 2209540]


Created nodejs:16-epel/nodejs tracking bugs for this issue:

Affects: epel-8 [bug 2209541]


Created nodejs:16/c-ares tracking bugs for this issue:

Affects: fedora-all [bug 2209547]
Comment 4 errata-xmlrpc 2023-06-14 07:27:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:3577 https://access.redhat.com/errata/RHSA-2023:3577
Comment 5 errata-xmlrpc 2023-06-14 08:39:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:3586 https://access.redhat.com/errata/RHSA-2023:3586
Comment 7 errata-xmlrpc 2023-07-12 08:12:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:4036 https://access.redhat.com/errata/RHSA-2023:4036
Comment 8 errata-xmlrpc 2023-07-12 08:24:18 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7

Via RHSA-2023:4039 https://access.redhat.com/errata/RHSA-2023:4039
Comment 9 errata-xmlrpc 2023-07-12 08:25:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:4035 https://access.redhat.com/errata/RHSA-2023:4035
Comment 10 errata-xmlrpc 2023-07-12 08:25:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:4034 https://access.redhat.com/errata/RHSA-2023:4034
Comment 11 errata-xmlrpc 2023-07-12 08:26:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2023:4033 https://access.redhat.com/errata/RHSA-2023:4033
Comment 12 errata-xmlrpc 2023-11-07 08:22:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6635 https://access.redhat.com/errata/RHSA-2023:6635
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