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CVE-2021-21707

Description

In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.

Risk Information

Base Score
5.3
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score
Exploitation Probability
0.563

Associated Vulnerability

VulnerabilityOS Platform
php7.4 security update(DSA-5082-1) php7.4_7.4.28-1+deb11u1_all.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-cgi_7.2.24-0ubuntu0.18.04.11_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-cgi_7.2.24-0ubuntu0.18.04.11_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-cli_7.2.24-0ubuntu0.18.04.11_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-cli_7.2.24-0ubuntu0.18.04.11_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-fpm_7.2.24-0ubuntu0.18.04.11_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.2-fpm_7.2.24-0ubuntu0.18.04.11_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-cgi_7.4.3-4ubuntu2.15_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-cgi_7.4.3-4ubuntu2.15_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-cli_7.4.3-4ubuntu2.10_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-cli_7.4.3-4ubuntu2.10_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-fpm_7.4.3-4ubuntu2.15_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-2) php7.4-fpm_7.4.3-4ubuntu2.15_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-cgi_8.0.8-1ubuntu0.3_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-cgi_8.0.8-1ubuntu0.3_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-cli_8.0.8-1ubuntu0.3_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-cli_8.0.8-1ubuntu0.3_amd64.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-fpm_8.0.8-1ubuntu0.3_i386.debLinux
HTML-embedded scripting language interpreter (USN-5300-3) php8.0-fpm_8.0.8-1ubuntu0.3_amd64.debLinux
php:7.4 security, bug fix, and enhancement update (RLSA-2022:7628) php-json-7.4.30-1.module+el8.7.0+1067+0a7071cc.x86_64.rpmLinux
php:7.4 security, bug fix, and enhancement update (RLSA-2022:7628) php-pear-1.10.13-1.module+el8.7.0+1067+0a7071cc.noarch.rpmLinux
php:7.4 security, bug fix, and enhancement update (RLSA-2022:7628) php-xmlrpc-7.4.30-1.module+el8.7.0+1067+0a7071cc.x86_64.rpmLinux
php:7.4 security, bug fix, and enhancement update (RLSA-2022:7628) php-pecl-xdebug-2.9.5-1.module+el8.4.0+415+e936cba3.x86_64.rpmLinux
CVE-2021-21707NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234