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Red Hat Security Advisory 2020-4667-01

Red Hat Security Advisory 2020-4667-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4667-01 - Mailman is a program used to help manage e-mail discussion lists. Issues addressed include a cross site scripting vulnerability.

tags | advisory, xss
systems | linux, redhat
advisories | CVE-2020-12137
SHA-256 | 77fd5e5c6a2a62b058d485688074e5b957851a5ac94d8639541d6571d113e75d

Red Hat Security Advisory 2020-4667-01

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

Synopsis: Moderate: mailman:2.1 security and bug fix update
Advisory ID: RHSA-2020:4667-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4667
Issue date: 2020-11-03
CVE Names: CVE-2020-12137
====================================================================
1. Summary:

An update for the mailman:2.1 module 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:

Mailman is a program used to help manage e-mail discussion lists.

Security Fix(es):

* mailman: XSS via file attachments in list archives (CVE-2020-12137)

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 8.3 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/):

1683399 - /etc/mailman has wrong permissions 0755 instead of 2775
1780100 - Module stream mailman:2.1 does not have correct module.md file
1805954 - Creating tmp files for systemd on behalf of mailman references legacy directory /var/run/ instead of /run
1830007 - CVE-2020-12137 mailman: XSS via file attachments in list archives
1837218 - Processing bounces from mailing lists causes oom crash of BounceRunner

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
mailman-2.1.29-10.module+el8.3.0+6860+8e47d84b.src.rpm

aarch64:
mailman-2.1.29-10.module+el8.3.0+6860+8e47d84b.aarch64.rpm
mailman-debuginfo-2.1.29-10.module+el8.3.0+6860+8e47d84b.aarch64.rpm
mailman-debugsource-2.1.29-10.module+el8.3.0+6860+8e47d84b.aarch64.rpm

ppc64le:
mailman-2.1.29-10.module+el8.3.0+6860+8e47d84b.ppc64le.rpm
mailman-debuginfo-2.1.29-10.module+el8.3.0+6860+8e47d84b.ppc64le.rpm
mailman-debugsource-2.1.29-10.module+el8.3.0+6860+8e47d84b.ppc64le.rpm

s390x:
mailman-2.1.29-10.module+el8.3.0+6860+8e47d84b.s390x.rpm
mailman-debuginfo-2.1.29-10.module+el8.3.0+6860+8e47d84b.s390x.rpm
mailman-debugsource-2.1.29-10.module+el8.3.0+6860+8e47d84b.s390x.rpm

x86_64:
mailman-2.1.29-10.module+el8.3.0+6860+8e47d84b.x86_64.rpm
mailman-debuginfo-2.1.29-10.module+el8.3.0+6860+8e47d84b.x86_64.rpm
mailman-debugsource-2.1.29-10.module+el8.3.0+6860+8e47d84b.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-2020-12137
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_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 2020 Red Hat, Inc.
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