rhsa-2020_4483
Vulnerability from csaf_redhat
Published
2020-11-04 02:10
Modified
2024-11-22 15:00
Summary
Red Hat Security Advisory: opensc security, bug fix, and enhancement update

Notes

Topic
An update for opensc 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
The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures. The following packages have been upgraded to a later upstream version: opensc (0.20.0). (BZ#1810660) Security Fix(es): * opensc: Out-of-bounds access of an ASN.1 Bitstring in decode_bit_string in libopensc/asn1.c (CVE-2019-15945) * opensc: Out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c (CVE-2019-15946) * opensc: Improper handling of buffer limits for CAC certificates (CVE-2019-19481) * opensc: Double free in coolkey_free_private_data in libopensc/card-coolkey.c (CVE-2019-20792) * opensc: Incorrect read operation during parsing of a SETCOS file attribute (CVE-2019-19479) 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.
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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        "text": "An update for opensc is now available for Red Hat Enterprise Linux 8.\n\nRed 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.",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "NONE",
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            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
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      "cve": "CVE-2019-19481",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2019-12-12T00:00:00+00:00",
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          "text": "An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.",
          "title": "Vulnerability description"
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          "category": "summary",
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          "title": "Vulnerability summary"
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        {
          "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.",
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          "category": "external",
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          "url": "https://www.cve.org/CVERecord?id=CVE-2019-19481"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-19481",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19481"
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      ],
      "scores": [
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
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    },
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      "cve": "CVE-2019-20792",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2020-04-29T00:00:00+00:00",
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        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1837946"
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      "notes": [
        {
          "category": "description",
          "text": "A use-after-free vulnerability was discovered in OpenSC while disconnecting a smart card. This flaw allows a physical attacker to exploit this vulnerability by inserting and removing a malicious smart card, handled by the coolkey driver, that could potentially execute code on the target system, with privileges that depend on the particular configuration and system that makes use of the OpenSC library.",
          "title": "Vulnerability description"
        },
        {
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          "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"
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      "title": "opensc: Double free in coolkey_free_private_data in libopensc/card-coolkey.c"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.