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Red Hat Security Advisory 2022-1964-01

Red Hat Security Advisory 2022-1964-01
Posted May 11, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-1964-01 - Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet for retrieval. Then Fetchmail forwards the mail through SMTP so the user can read it through their favorite mail client. Issues addressed include bypass, denial of service, and information leakage vulnerabilities.

tags | advisory, remote, denial of service, tcp, vulnerability, protocol
systems | linux, redhat
advisories | CVE-2021-36386, CVE-2021-39272
SHA-256 | 56a9423de5b90a5b76974fef202cb8350dc94cd1c401b9fb36ecb0edbd6e7fed

Red Hat Security Advisory 2022-1964-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: fetchmail security update
Advisory ID: RHSA-2022:1964-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1964
Issue date: 2022-05-10
CVE Names: CVE-2021-36386 CVE-2021-39272
=====================================================================

1. Summary:

An update for fetchmail is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

Fetchmail is a remote mail retrieval and forwarding utility intended for
use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail
supports every remote-mail protocol currently in use on the Internet (POP2,
POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for
retrieval. Then Fetchmail forwards the mail through SMTP so the user can
read it through their favorite mail client.

Security Fix(es):

* fetchmail: DoS or information disclosure when logging long messages
(CVE-2021-36386)

* fetchmail: STARTTLS session encryption bypassing (CVE-2021-39272)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.6 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1987766 - CVE-2021-36386 fetchmail: DoS or information disclosure when logging long messages
1999190 - CVE-2021-39272 fetchmail: STARTTLS session encryption bypassing

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
fetchmail-6.4.24-1.el8.src.rpm

aarch64:
fetchmail-6.4.24-1.el8.aarch64.rpm
fetchmail-debuginfo-6.4.24-1.el8.aarch64.rpm
fetchmail-debugsource-6.4.24-1.el8.aarch64.rpm

ppc64le:
fetchmail-6.4.24-1.el8.ppc64le.rpm
fetchmail-debuginfo-6.4.24-1.el8.ppc64le.rpm
fetchmail-debugsource-6.4.24-1.el8.ppc64le.rpm

s390x:
fetchmail-6.4.24-1.el8.s390x.rpm
fetchmail-debuginfo-6.4.24-1.el8.s390x.rpm
fetchmail-debugsource-6.4.24-1.el8.s390x.rpm

x86_64:
fetchmail-6.4.24-1.el8.x86_64.rpm
fetchmail-debuginfo-6.4.24-1.el8.x86_64.rpm
fetchmail-debugsource-6.4.24-1.el8.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-36386
https://access.redhat.com/security/cve/CVE-2021-39272
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.6_release_notes/

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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