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CVE-2020-12762

Good to know:

Date: May 8, 2020

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

Language: C

Severity Score

7.8

Related Resources (24)

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/

Url: https://usn.ubuntu.com/4360-1/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/

Url: https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12762

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/

Url: https://www.debian.org/security/2020/dsa-4741

Url: https://security.netapp.com/advisory/ntap-20210521-0001/

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-12762

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/

Url: https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html

Url: https://usn.ubuntu.com/4360-4/

Url: https://security.alpinelinux.org/vuln/CVE-2020-12762

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/

Url: https://security-tracker.debian.org/tracker/CVE-2020-12762

Url: https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html

Url: https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html

Url: https://lists.debian.org/debian-lts-announce/2023/06/msg00023.html

Url: https://access.redhat.com/security/cve/CVE-2020-12762

Url: https://security.gentoo.org/glsa/202006-13

Url: https://github.com/json-c/json-c/pull/592

Url: https://github.com/rsyslog/libfastjson/issues/161

Url: https://www.mend.io/vulnerability-database/CVE-2020-12762

Severity Score

7.8

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version 0.15

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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