Vulnerability-Lookup

RHSA-2021:4913

Vulnerability from csaf_redhat - Published: 2021-12-02 16:31 - Updated: 2026-11-07 05:27

Summary

Red Hat Security Advisory: mailman security update

Severity

Important

Notes

Topic: An update for mailman is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. 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.

Details: Mailman is a program used to help manage e-mail discussion lists. Security Fix(es): * mailman: CSRF token bypass allows to perform CSRF attacks and account takeover (CVE-2021-42097) * mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover (CVE-2021-44227) * mailman: CSRF protection missing in the user options page (CVE-2016-6893) 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.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2016-6893

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hijack the authentication of arbitrary users for requests that modify an option, as demonstrated by gaining access to the credentials of a victim's account.

6.5 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE-352 - Cross-Site Request Forgery

Affected products

Fixed 12 products

Product	Version	Remediation
Unresolved product id: 7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.src	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-7.9.Z:mailman-3:2.1.15-30.el7_9.2.src	—	Vendor Fix fix
Unresolved product id: 7Workstation-7.9.Z:mailman-3:2.1.15-30.el7_9.2.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.x86_64	—	Vendor Fix fix

Threats

Impact Moderate

CVE-2021-42097

A Cross-Site Request Forgery (CSRF) attack can be performed in mailman due to a CSRF token bypass. CSRF tokens are not checked against the right user and a token created by one user can be used by another one to perform a request, effectively bypassing the protection provided by CSRF tokens. A remote attacker with an account on the mailman system can use this flaw to perform a CSRF attack and perform operations on behalf of the victim user.

8.0 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CWE-352 - Cross-Site Request Forgery

Affected products

Fixed 12 products, the same list as for CVE-2016-6893

Threats

Impact Important

CVE-2021-44227

A Cross-Site Request Forgery (CSRF) attack can be performed in mailman due to a CSRF token bypass. CSRF tokens are not checked against the right type of user when performing admin operations and a token created by a regular user can be used by an admin to perform an admin-level request, effectively bypassing the protection provided by CSRF tokens. A remote attacker with an account on the mailman system can use this flaw to perform a CSRF attack and perform operations on behalf of the victim admin.

8.0 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CWE-352 - Cross-Site Request Forgery

Affected products

Fixed 12 products, the same list as for CVE-2016-6893

Threats

Impact Important

References

18 references

URL	Category
https://access.redhat.com/errata/RHSA-2021:4913	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1370155	external
https://bugzilla.redhat.com/show_bug.cgi?id=2020568	external
https://bugzilla.redhat.com/show_bug.cgi?id=2026862	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2016-6893	self
https://bugzilla.redhat.com/show_bug.cgi?id=1370155	external
https://www.cve.org/CVERecord?id=CVE-2016-6893	external
https://nvd.nist.gov/vuln/detail/CVE-2016-6893	external
https://access.redhat.com/security/cve/CVE-2021-42097	self
https://bugzilla.redhat.com/show_bug.cgi?id=2020568	external
https://www.cve.org/CVERecord?id=CVE-2021-42097	external
https://nvd.nist.gov/vuln/detail/CVE-2021-42097	external
https://access.redhat.com/security/cve/CVE-2021-44227	self
https://bugzilla.redhat.com/show_bug.cgi?id=2026862	external
https://www.cve.org/CVERecord?id=CVE-2021-44227	external
https://nvd.nist.gov/vuln/detail/CVE-2021-44227	external

Acknowledgments

Red Hat Product Security Riccardo Schirone

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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.ppc64",
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            "7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.src",
            "7Server-7.9.Z:mailman-3:2.1.15-30.el7_9.2.x86_64",
            "7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.ppc64",
            "7Server-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.ppc64le",
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            "7Workstation-7.9.Z:mailman-3:2.1.15-30.el7_9.2.x86_64",
            "7Workstation-7.9.Z:mailman-debuginfo-3:2.1.15-30.el7_9.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover"
    }
  ]
}

CVE-2016-6893 (GCVE-0-2016-6893)

Vulnerability from cvelistv5 – Published: 2016-09-02 14:00 – Updated: 2024-08-06 01:43

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2158 records in the last 180 days details

References

4 references

URL	Tags
http://www.debian.org/security/2016/dsa-3668	vendor-advisoryx_refsource_DEBIAN
https://bugs.launchpad.net/bugs/1614841	x_refsource_CONFIRM
http://www.securityfocus.com/bid/92731	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1036728	vdb-entryx_refsource_SECTRACK

Date Public

2016-09-01 00:00

Show details on NVD website

JSON

To clipboard

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CVE-2021-42097 (GCVE-0-2021-42097)

Vulnerability from cvelistv5 – Published: 2021-10-21 00:45 – Updated: 2024-08-04 03:22

Summary

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2158 records in the last 180 days details

References

4 references

URL	Tags
https://mail.python.org/archives/list/mailman-ann…	x_refsource_CONFIRM
https://bugs.launchpad.net/mailman/+bug/1947640	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/10/21/4	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4991	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

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CVE-2021-44227 (GCVE-0-2021-44227)

Vulnerability from cvelistv5 – Published: 2021-12-02 02:52 – Updated: 2024-08-04 04:17

Summary

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2158 records in the last 180 days details

References

2 references

URL	Tags
https://bugs.launchpad.net/mailman/+bug/1952384	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2021:4913

CVE-2016-6893 (GCVE-0-2016-6893)

CVE-2021-42097 (GCVE-0-2021-42097)

CVE-2021-44227 (GCVE-0-2021-44227)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour