CVE-2020-7060

global buffer-overflow in mbfl_filt_conv_big5_wchar

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 8.89 % · percentile 95 (2026-10-27)
State: PUBLISHED
Published: 2020-02-10
Updated: 2024-09-17
Assigner: php
NVD status: Modified

Description

When using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or crash.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	php
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	NVD · security@php.net (Secondary)
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 6.4	AV:N/AC:L/Au:N/C:P/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-125

European references

ENISA EUVD · EUVD-2020-28194
GCVE · GCVE-0-2020-7060

CERT-FR advisories

CERTFR-2021-AVI-571 — Multiples vulnérabilités dans Tenable · cert.ssi.gouv.fr
CERTFR-2020-AVI-054 — Multiples vulnérabilités dans PHP · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.2.0 < 7.2.27
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.3.0 < 7.3.14
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.4.0 < 7.4.2
cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* < 5.19.0
cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* ≥ 8.0 ≤ 8.4
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Affected products

Product	Versions
PHP Group · PHP	affected 7.2.x < 7.2.27 ; affected 7.3.x < 7.3.14 ; affected 7.4.x < 7.4.2

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD