global buffer-overflow in mbfl_filt_conv_big5_wchar
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 8.9%
exploitation probability
8.9%top 5% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Affected products
PHP Group · PHPReferences
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlhttps://bugs.php.net/bug.php?id=79037https://lists.debian.org/debian-lts-announce/2020/02/msg00030.htmlhttps://seclists.org/bugtraq/2020/Feb/27https://seclists.org/bugtraq/2020/Feb/31https://seclists.org/bugtraq/2021/Jan/3https://security.gentoo.org/glsa/202003-57https://security.netapp.com/advisory/ntap-20200221-0002/https://usn.ubuntu.com/4279-1/https://www.debian.org/security/2020/dsa-4626https://www.debian.org/security/2020/dsa-4628https://www.oracle.com/security-alerts/cpuApr2021.html