PT-2020-3649 · Gnu+6 · Gnu Mailman+6

Hanno Böck · Published 2020-04-24 · Updated 2022-11-16 · CVE-2020-12137

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions GNU Mailman versions 2.x through 2.1.29 GNU Mailman version 2.1.30 is not affected, but all versions prior to 2.1.30 are vulnerable.

Description The issue is related to the handling of MIME parts in GNU Mailman, which may contribute to cross-site scripting (XSS) attacks against visitors of list archives. This occurs because an HTTP reply from an archive web server may lack a MIME type, leading a web browser to perform MIME sniffing and potentially execute JavaScript code. The vulnerability is also related to the lack of protection for the web page structure, which could allow a remote attacker to impact data integrity.

Recommendations For GNU Mailman versions 2.x through 2.1.29, update to version 2.1.30 or later to resolve the issue. As a temporary workaround, consider restricting access to list archives to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2020-2129

ALT-PU-2021-2036

ALT-PU-2021-2340

BDU:2020-03997

CESA-2020_4667

CVE-2020-12137

DLA-2200-1

DSA-4664-1

MGASA-2020-0276

OESA-2021-1405

OPENSUSE-SU-2020:1707-1

OPENSUSE-SU-2020:1752-1

OPENSUSE-SU-2020_1707-1

RHSA-2020:4667

RHSA-2020_4667

SUSE-SU-2020:1301-1

SUSE-SU-2020:14356-1

SUSE-SU-2020_14356-1

USN-4348-1

USN-5121-2

Affected Products

Alt Linux

Centos

Gnu Mailman

Linuxmint

Red Hat

Suse

Ubuntu

References · 62

• https://ubuntu.com/security/CVE-2021-42096 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-12137 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK · Vendor Advisory
• https://usn.ubuntu.com/4348-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-12108 · Security Note
• https://osv.dev/vulnerability/CVE-2020-12137 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42097 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2020:1707-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13796 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0276 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4348-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-42097 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-15011 · Security Note