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ubuntucveUbuntu.comUB:CVE-2020-12762
HistoryMay 09, 2020 - 12:00 a.m.

CVE-2020-12762

2020-05-0900:00:00
ubuntu.com
ubuntu.com
10

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

43.7%

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

Bugs

Notes

Author Note
mdeslaur USN-4360-1 introduced a regression and the problematic fix was backed out in USN-4360-2 and USN-4360-3 pending further investigation.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchjson-c< 0.12.1-1.3ubuntu0.3UNKNOWN
ubuntu19.10noarchjson-c< 0.13.1+dfsg-4ubuntu0.3UNKNOWN
ubuntu20.04noarchjson-c< 0.13.1+dfsg-7ubuntu0.3UNKNOWN
ubuntu14.04noarchjson-c< 0.11-3ubuntu1.2+esm3) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchjson-c< 0.11-4ubuntu2.6UNKNOWN

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

43.7%