CVE-2020-7060

Public Exploit
global buffer-overflow in mbfl_filt_conv_big5_wchar

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.58% Top 15%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory php.net
Affected: PHP Group PHP
Published at:
Updated at:

References

Link Tags
https://seclists.org/bugtraq/2020/Feb/27 third party advisory mailing list
https://www.debian.org/security/2020/dsa-4626 third party advisory vendor advisory
https://usn.ubuntu.com/4279-1/ third party advisory patch vendor advisory
https://www.debian.org/security/2020/dsa-4628 third party advisory vendor advisory
https://seclists.org/bugtraq/2020/Feb/31 third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/02/msg00030.html third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html mailing list third party advisory vendor advisory
https://security.gentoo.org/glsa/202003-57 third party advisory vendor advisory
https://www.oracle.com/security-alerts/cpujul2020.html third party advisory
https://security.netapp.com/advisory/ntap-20200221-0002/ third party advisory mailing list
https://bugs.php.net/bug.php?id=79037 exploit patch vendor advisory
https://seclists.org/bugtraq/2021/Jan/3 third party advisory mailing list
https://www.oracle.com/security-alerts/cpuApr2021.html third party advisory
https://www.tenable.com/security/tns-2021-14 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-7060?
CVE-2020-7060 has been scored as a medium severity vulnerability.
How to fix CVE-2020-7060?
To fix CVE-2020-7060, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7060 being actively exploited in the wild?
It is possible that CVE-2020-7060 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-7060?
CVE-2020-7060 affects PHP Group PHP.
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