rhsa-2021_4181
Vulnerability from csaf_redhat
Published
2021-11-09 18:10
Modified
2024-11-22 16:48
Summary
Red Hat Security Advisory: mutt security, bug fix, and enhancement update

Notes

Topic
An update for mutt 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.
Details
Mutt is a low resource, highly configurable, text-based MIME e-mail client. Mutt supports most e-mail storing formats, such as mbox and Maildir, as well as most protocols, including POP3 and IMAP. The following packages have been upgraded to a later upstream version: mutt (2.0.7). (BZ#1912614) Security Fix(es): * mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection (CVE-2020-28896) * mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181) 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 8.5 Release Notes linked from 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.


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  "vulnerabilities": [
    {
      "cve": "CVE-2020-28896",
      "cwe": {
        "id": "CWE-319",
        "name": "Cleartext Transmission of Sensitive Information"
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      "discovery_date": "2020-11-20T00:00:00+00:00",
      "ids": [
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          "text": "1900826"
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      "notes": [
        {
          "category": "description",
          "text": "Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server\u0027s initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security has rated the severity of this flaw as Moderate because although the Confidentiality impact is high, the attack complexity is also high as a particular attacker would at least need to coordinate social engineering a victim to connect to a bad server, and also perform a man-in-the-middle attack or perform similar interception of the connection. Please see the following page for details on Red Hat severity ratings with special attention to Moderate: https://access.redhat.com/security/updates/classification .",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-28896"
        },
        {
          "category": "external",
          "summary": "RHBZ#1900826",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900826"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-28896",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-28896"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-28896",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28896"
        }
      ],
      "release_date": "2020-11-20T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-11-09T18:10:01+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2021:4181"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection"
    },
    {
      "cve": "CVE-2021-3181",
      "cwe": {
        "id": "CWE-401",
        "name": "Missing Release of Memory after Effective Lifetime"
      },
      "discovery_date": "2021-01-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1920446"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "rfc822.c in Mutt through 2.0.4 allows remote attackers to cause a denial of service (mailbox unavailability) by sending email messages with sequences of semicolon characters in RFC822 address fields (aka terminators of empty groups). A small email message from the attacker can cause large memory consumption, and the victim may then be unable to see email messages from other persons.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "mutt: Memory leak when parsing rfc822 group addresses",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "category": "self",
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          "url": "https://access.redhat.com/security/cve/CVE-2021-3181"
        },
        {
          "category": "external",
          "summary": "RHBZ#1920446",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1920446"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3181",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3181"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3181",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3181"
        }
      ],
      "release_date": "2021-01-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
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          "cvss_v3": {
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "mutt: Memory leak when parsing rfc822 group addresses"
    }
  ]
}


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