CVE-2020-7060: global buffer-overflow in mbfl_filt_conv_big5_wchar
First published: Tue Jan 21 2020(Updated: )
A flaw was found in php before 7.4.2. A global buffer overflow in mbfl_filt_conv_big5_wchar function may lead to corruption of memory data. Upstream issue: <a href="http://bugs.php.net/79037">http://bugs.php.net/79037</a>
Credit: security@php.net security@php.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rh-php73-php | <0:7.3.20-1.el7 | 0:7.3.20-1.el7 |
| PHP PHP | >=7.2.0<7.2.27 | |
| PHP PHP | >=7.3.0<7.3.14 | |
| PHP PHP | >=7.4.0<7.4.2 | |
| Tenable Tenable.sc | <5.19.0 | |
| Oracle Communications Diameter Signaling Router | >=8.0<=8.4 | |
| openSUSE Leap | =15.1 | |
| Debian Debian Linux | =8.0 | |
| PHP PHP | <7.2.27 | 7.2.27 |
| redhat/php | <7.4.2 | 7.4.2 |
| debian/php7.4 | 7.4.33-1+deb11u5 7.4.33-1+deb11u7 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-7060 https://nvd.nist.gov/vuln/detail/CVE-2020-7060
- https://bugzilla.redhat.com/show_bug.cgi?id=1797779
- https://access.redhat.com/errata/RHSA-2020:3662
- https://access.redhat.com/errata/RHSA-2020:5275
- https://access.redhat.com/security/cve/cve-2020-7060
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
- https://bugs.php.net/bug.php?id=79037
- https://lists.debian.org/debian-lts-announce/2020/02/msg00030.html
- https://seclists.org/bugtraq/2020/Feb/27
- https://seclists.org/bugtraq/2020/Feb/31
- https://seclists.org/bugtraq/2021/Jan/3
- https://security.gentoo.org/glsa/202003-57
- https://security.netapp.com/advisory/ntap-20200221-0002/
- https://usn.ubuntu.com/4279-1/
- https://www.debian.org/security/2020/dsa-4626
- https://www.debian.org/security/2020/dsa-4628
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.tenable.com/security/tns-2021-14
- https://launchpad.net/bugs/cve/CVE-2020-7060
- https://www.php.net/ChangeLog-7.php#7.2.27 (Advisory)
- http://bugs.php.net/79037
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1797780
- http://git.php.net/?p=php-src.git;a=commit;h=2bcbc95f033c31b00595ed39f79c3a99b4ed0501
- https://bugs.php.net/79037
- https://security-tracker.debian.org/tracker/CVE-2020-7060
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7060
- https://nvd.nist.gov/vuln/detail/CVE-2020-7060
- https://ubuntu.com/security/CVE-2020-7060
Frequently Asked Questions
What is CVE-2020-7060?
CVE-2020-7060 is a fixed bug (global buffer-overflow in `mbfl_filt_conv_big5_wchar`).
What is the severity of CVE-2020-7060?
The severity of CVE-2020-7060 is critical with a CVSS score of 9.1.
Which versions of PHP are affected by CVE-2020-7060?
PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14, and 7.4.x below 7.4.2 are affected by CVE-2020-7060.
How can CVE-2020-7060 be exploited?
CVE-2020-7060 can be exploited by supplying data that will cause the function `mbfl_filt_conv_big5_wchar` to read past the allocated buffer, leading to information disclosure.
What is the remedy for CVE-2020-7060?
To fix CVE-2020-7060, PHP versions 7.2.27, 7.3.14, and 7.4.2 should be installed, depending on the PHP version being used.
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