Bug 2265713 (CVE-2024-25629) - CVE-2024-25629 c-ares: Out of bounds read in ares__read_line()
Summary: CVE-2024-25629 c-ares: Out of bounds read in ares__read_line()
Keywords:
Status: NEW
Alias: CVE-2024-25629
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2265714 2265715
Blocks: 2265712
TreeView+ depends on / blocked
 
Reported: 2024-02-23 19:03 UTC by Patrick Del Bello
Modified: 2024-05-20 11:56 UTC (History)
6 users (show)

Fixed In Version: c-ares 1.27.0
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in c-ares where the ares__read_line() is used to parse local configuration files such as /etc/resolv.conf, /etc/nsswitch.conf, the HOSTALIASES file, and if using a c-ares version prior to 1.22.0, the /etc/hosts file. If the configuration files have an embedded NULL character as the first character in a new line, it can attempt to read memory before the start of the given buffer, which may result in a crash.
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:2794 0 None None None 2024-05-09 09:29:36 UTC
Red Hat Product Errata RHBA-2024:2795 0 None None None 2024-05-09 09:29:47 UTC
Red Hat Product Errata RHBA-2024:2854 0 None None None 2024-05-15 12:44:55 UTC
Red Hat Product Errata RHBA-2024:2856 0 None None None 2024-05-15 15:42:19 UTC
Red Hat Product Errata RHBA-2024:2902 0 None None None 2024-05-20 01:25:41 UTC
Red Hat Product Errata RHBA-2024:2922 0 None None None 2024-05-20 11:56:35 UTC
Red Hat Product Errata RHSA-2024:2778 0 None None None 2024-05-09 06:20:45 UTC
Red Hat Product Errata RHSA-2024:2779 0 None None None 2024-05-09 06:18:17 UTC
Red Hat Product Errata RHSA-2024:2780 0 None None None 2024-05-09 06:21:28 UTC
Red Hat Product Errata RHSA-2024:2853 0 None None None 2024-05-15 11:28:54 UTC
Red Hat Product Errata RHSA-2024:2910 0 None None None 2024-05-20 02:06:14 UTC

Description Patrick Del Bello 2024-02-23 19:03:45 UTC 
c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`, the `HOSTALIASES` file, and if using a c-ares version prior to 1.27.0, the `/etc/hosts` file. If any of these configuration files has an embedded `NULL` character as the first character in a new line, it can lead to attempting to read memory prior to the start of the given buffer which may result in a crash. This issue is fixed in c-ares 1.27.0. No known workarounds exist.

https://github.com/c-ares/c-ares/commit/a804c04ddc8245fc8adf0e92368709639125e183
https://github.com/c-ares/c-ares/security/advisories/GHSA-mg26-v6qh-x48q
Comment 1 Patrick Del Bello 2024-02-23 19:05:40 UTC 
Created c-ares tracking bugs for this issue:

Affects: fedora-all [bug 2265714]
Comment 12 errata-xmlrpc 2024-05-09 06:18:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2779 https://access.redhat.com/errata/RHSA-2024:2779
Comment 13 errata-xmlrpc 2024-05-09 06:20:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:2778 https://access.redhat.com/errata/RHSA-2024:2778
Comment 14 errata-xmlrpc 2024-05-09 06:21:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:2780 https://access.redhat.com/errata/RHSA-2024:2780
Comment 15 errata-xmlrpc 2024-05-15 11:28:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2853 https://access.redhat.com/errata/RHSA-2024:2853
Comment 16 errata-xmlrpc 2024-05-20 02:06:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2910 https://access.redhat.com/errata/RHSA-2024:2910
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