csaf_redhat - rhsa-2021

rhsa-2021_4382

Vulnerability from csaf_redhat

Published

2021-11-09 17:31

Modified

2024-11-06 00:07

Summary

Red Hat Security Advisory: json-c security and bug fix update

Notes

Topic

An update for json-c 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

JSON-C implements a reference counting object model that allows users to easily construct JavaScript Object Notation (JSON) objects in C, output them as JSON formatted strings, and parse JSON formatted strings back into the C representation of JSON objects. Security Fix(es): * json-c: integer overflow and out-of-bounds write via a large JSON file (CVE-2020-12762) 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.

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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          "title": "Vulnerability description"
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          "text": "libfastjson: integer overflow and out-of-bounds write via a large JSON file",
          "title": "Vulnerability summary"
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          "text": "This is essentially a integer overflow in the \u0027size\u0027 variable caused by large data input. In most systems its a signed integer overflow and results in out of bounds buffer write on the heap. However the impact is greatly reduced because such an attack is only possible if the application compiled with json-c is designed to accept untrusted large json files. Also the attack vector in this case as considered as local in most practical cases.",
          "title": "Statement"
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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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          "details": "Since this flaw is triggered by untrusted large json files. If any applications linked against json-c is used ensure that the application does not accept large json files. (or untrusted ones wherever possible)",
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      "scores": [
        {
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libfastjson: integer overflow and out-of-bounds write via a large JSON file"
    }
  ]
}

cve-2020-12762

Vulnerability from cvelistv5

Published

2020-05-09 00:00

Modified

2024-08-04 12:04

Severity ?

Summary

json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend.

References

▼	URL	Tags
	https://github.com/json-c/json-c/pull/592
	https://github.com/rsyslog/libfastjson/issues/161
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/	vendor-advisory
	https://usn.ubuntu.com/4360-1/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/	vendor-advisory
	https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html	mailing-list
	https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html	mailing-list
	https://usn.ubuntu.com/4360-4/	vendor-advisory
	https://security.gentoo.org/glsa/202006-13	vendor-advisory
	https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html	mailing-list
	https://www.debian.org/security/2020/dsa-4741	vendor-advisory
	https://security.netapp.com/advisory/ntap-20210521-0001/
	https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
	https://lists.debian.org/debian-lts-announce/2023/06/msg00023.html	mailing-list

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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        {
          "name": "FEDORA-2020-7eb7eac270",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/"
        },
        {
          "name": "[debian-lts-announce] 20200531 [SECURITY] [DLA 2228-1] json-c security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html"
        },
        {
          "name": "[debian-lts-announce] 20200531 [SECURITY] [DLA 2228-2] json-c regression update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html"
        },
        {
          "name": "USN-4360-4",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/4360-4/"
        },
        {
          "name": "GLSA-202006-13",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202006-13"
        },
        {
          "name": "[debian-lts-announce] 20200730 [SECURITY] [DLA 2301-1] json-c security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html"
        },
        {
          "name": "DSA-4741",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4741"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210521-0001/"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf"
        },
        {
          "name": "[debian-lts-announce] 20230620 [SECURITY] [DLA 3461-1] libfastjson security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00023.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-12762",
    "datePublished": "2020-05-09T00:00:00",
    "dateReserved": "2020-05-09T00:00:00",
    "dateUpdated": "2024-08-04T12:04:22.874Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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