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Red Hat ELS 8: RHSA-2022-1964-01 Moderate: fetchmail DoS Fix

red hat
Calendar Grey May 10, 2022
Dist Redhat Esm H88
The latest Fetchmail patch from Red Hat addresses multiple moderate vulnerabilities, including possible denial of service (DoS) and encryption bypass risks. Learn more!
An update for fetchmail is now available for Red Hat Enterprise Linux 8

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate security update fetchmail red hat email retrieval

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://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.6_release_notes/index

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


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

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update fetchmail red hat email retrieval

Relevant Releases Architectures

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

Bugs Fixed

1987766 - CVE-2021-36386 fetchmail: DoS or information disclosure when logging long messages

1999190 - CVE-2021-39272 fetchmail: STARTTLS session encryption bypassing

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