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CVE-2020-7060

global buffer-overflow in mbfl_filt_conv_big5_wchar

CRITICAL
9.1
CVSS Score
Published: February 10, 2020 at 07:45 AM UTC
Updated: June 17, 2026 at 03:24 AM UTC
5 products affected across 5 vendorsDebian LinuxLeapPHP

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Severity
CRITICAL9.1
Exploit prediction
EPSS 9%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
8.0
Leap· openSUSEdrupal
95%
15.1
Communications Diameter Signaling Router· Oracle
95%
8.0 ≤ v ≤ 8.4
PHP· PHPdrupal
95%
7.2.0 ≤ v < 7.2.277.2.x ≤ v < 7.2.277.3.0 ≤ v < 7.3.147.3.x ≤ v < 7.3.147.4.0 ≤ v < 7.4.27.4.x ≤ v < 7.4.27.2.x7.3.x7.4.x
Affected range stops below 7.2.27, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.4.2, so it looks safe — our inference, not a vendor statement
Tenable.Sc· Tenabledrupal
95%
v < 5.19.0
Affected range stops below 5.19.0, so it looks safe — our inference, not a vendor statement

References (14)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://bugs.php.net/bug.php?id=79037
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/02/msg00030.html
Mailing Listx_refsource_BUGTRAQThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2020/Feb/27
Mailing Listx_refsource_BUGTRAQThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2020/Feb/31
Mailing Listx_refsource_BUGTRAQThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2021/Jan/3
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202003-57
x_refsource_CONFIRMMailing ListThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200221-0002/

CVSS

9.1CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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