CVE-2020-22217: Buffer Overflow

Published Aug 22, 2023
·
Updated

Buffer overflow vulnerability in c-ares before 1161 thru 1170 via function aresparsesoareply in aresparsesoareply.c.

Affected Software

7 affected componentsFixes available
debian/c-ares<=1.14.0-1+deb10u1
1.14.0-1+deb10u41.17.1-1+deb11u31.18.1-31.27.0-1
ubuntu/c-ares<1.15.0-1ubuntu0.4
1.15.0-1ubuntu0.4
c-ares c-ares=1.16.1
c-ares c-ares=1.17.0
Debian Debian Linux=10.0
redhat/c-ares<1.17.0
1.17.0
Microsoft cbl2 python-gevent 21.1.2-1<21.1.2-1
21.1.2-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/c-ares to a version that resolves this vulnerability.

    Fixed in 1.14.0-1+deb10u4Fixed in 1.17.1-1+deb11u3Fixed in 1.18.1-3Fixed in 1.27.0-1
  2. Upgrade

    Upgrade ubuntu/c-ares to a version that resolves this vulnerability.

    Fixed in 1.15.0-1ubuntu0.4
  3. Upgrade

    Upgrade redhat/c-ares to a version that resolves this vulnerability.

    Fixed in 1.17.0
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 21.1.2-1

Event History

Aug 22, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Aug 28, 2023
Data Sourced
via Red Hat·10:54 PM
DescriptionSeverityAffected Software
Sep 4, 2023
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·07:00 AM
Affected Software
Updated
via Microsoft·07:00 AM
DescriptionSeverity
Jan 11, 2024
Data Sourced
via Launchpad·11:45 PM
Description

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2020-22217?

CVE-2020-22217 is a buffer overflow vulnerability in c-ares, specifically in the function ares_parse_soa_reply.

2

How severe is CVE-2020-22217?

CVE-2020-22217 has a severity rating of 9.8 (Critical).

3

Which versions of c-ares are affected by CVE-2020-22217?

Versions c-ares 1.16.1 through 1.17.0 are affected by CVE-2020-22217.

4

How can I fix CVE-2020-22217?

To fix CVE-2020-22217, update c-ares to version 1.17.1-1+deb11u2 or later.

5

Where can I find more information about CVE-2020-22217?

You can find more information about CVE-2020-22217 on the GitHub issue page and the Debian LTS announcement.

Company

Resources

Contact

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