CVE-2020-12762

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

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/json-c/json-c/pull/592	Exploit Patch Third Party Advisory
https://github.com/rsyslog/libfastjson/issues/161
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/
https://usn.ubuntu.com/4360-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/
https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html
https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html
https://usn.ubuntu.com/4360-4/
https://security.gentoo.org/glsa/202006-13
https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html
https://www.debian.org/security/2020/dsa-4741
https://security.netapp.com/advisory/ntap-20210521-0001/

Configurations

Configuration 1 (hide)

cpe:2.3:a:json-c_project:json-c:*:*:*:*:*:*:*:*

Information

Published : 2020-05-09 18:15

Updated : 2021-05-21 09:15

NVD link : CVE-2020-12762

Mitre link : CVE-2020-12762

JSON object : View

Products Affected

json-c_project

json-c

CWE

CWE-190

Integer Overflow or Wraparound

CWE-787

Out-of-bounds Write

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