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AUSCERT External Security Bulletin Redistribution
ESB-2024.1389
libfastjson security update
6 March 2024
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AusCERT Security Bulletin Summary
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Product: libfastjson
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12762
Original Bulletin:
https://access.redhat.com/errata/RHSA-2024:1154
Comment: CVSS (Max): 7.8 CVE-2020-12762 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Moderate: libfastjson security update
Advisory ID: RHSA-2024:1154
Product: Red Hat Enterprise Linux AppStream EUS (v.9.0)
Advisory URL: https://access.redhat.com/errata/RHSA-2024:1154
Issue date: 2024-03-05
CVE Names: CVE-2020-12762
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1. Summary:
An update for libfastjson is now available for Red Hat Enterprise Linux 9.0
Extended Update Support.
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream EUS (v.9.0) - aarch64, ppc64le, i686, x86_64,
s390x
3. Description:
The libfastjson library provides essential JavaScript Object Notation (JSON)
handling functions. The library enables users to construct JSON objects in C,
output them as JSON-formatted strings, and convert JSON-formatted strings back
to the C representation of JSON objects.
Security Fix(es):
* json-c, libfastjson: 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.
4. Solution:
For details on how to apply this update, which includes the changes described in
this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1835253 - CVE-2020-12762 - json-c, libfastjson: integer overflow and out-of-
bounds write via a large JSON file
6. Package List:
Red Hat Enterprise Linux AppStream EUS (v.9.0)
aarch64:
libfastjson-0:0.99.9-3.el9_0.1.aarch64.rpm
libfastjson-debuginfo-0:0.99.9-3.el9_0.1.aarch64.rpm
libfastjson-debugsource-0:0.99.9-3.el9_0.1.aarch64.rpm
i686:
libfastjson-0:0.99.9-3.el9_0.1.i686.rpm
libfastjson-debuginfo-0:0.99.9-3.el9_0.1.i686.rpm
libfastjson-debugsource-0:0.99.9-3.el9_0.1.i686.rpm
ppc64le:
libfastjson-0:0.99.9-3.el9_0.1.ppc64le.rpm
libfastjson-debuginfo-0:0.99.9-3.el9_0.1.ppc64le.rpm
libfastjson-debugsource-0:0.99.9-3.el9_0.1.ppc64le.rpm
s390x:
libfastjson-0:0.99.9-3.el9_0.1.s390x.rpm
libfastjson-debuginfo-0:0.99.9-3.el9_0.1.s390x.rpm
libfastjson-debugsource-0:0.99.9-3.el9_0.1.s390x.rpm
Source:
libfastjson-0:0.99.9-3.el9_0.1.src.rpm
x86_64:
libfastjson-0:0.99.9-3.el9_0.1.x86_64.rpm
libfastjson-debuginfo-0:0.99.9-3.el9_0.1.x86_64.rpm
libfastjson-debugsource-0:0.99.9-3.el9_0.1.x86_64.rpm
7. References:
https://access.redhat.com/security/cve/CVE-2020-12762
https://access.redhat.com/security/updates/classification/#moderate
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