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AUSCERT External Security Bulletin Redistribution
ESB-2021.2366
USN-5006-2: PHP vulnerabilities
14 July 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: PHP
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-21705 CVE-2021-21704 CVE-2021-21702
CVE-2020-7071 CVE-2020-7068
Reference: ESB-2021.2328
Original Bulletin:
https://ubuntu.com/security/notices/USN-5006-2
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USN-5006-2: PHP vulnerabilities
13 July 2021
Several security issues were fixed in PHP.
Releases
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o php5 - HTML-embedded scripting language interpreter
o php7.0 - HTML-embedded scripting language interpreter
Details
USN-5006-1 fixed several vulnerabilities in PHP. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that PHP incorrectly handled certain PHAR files. A remote
attacker could possibly use this issue to cause PHP to crash, resulting in
a denial of service, or possibly obtain sensitive information. ( CVE-2020-7068
)
It was discovered that PHP incorrectly handled parsing URLs with passwords.
A remote attacker could possibly use this issue to cause PHP to mis-parse
the URL and produce wrong data. ( CVE-2020-7071 )
It was discovered that PHP incorrectly handled certain malformed XML data
when being parsed by the SOAP extension. A remote attacker could possibly
use this issue to cause PHP to crash, resulting in a denial of service.
( CVE-2021-21702 )
It was discovered that PHP incorrectly handled the pdo_firebase module. A
remote attacker could possibly use this issue to cause PHP to crash,
resulting in a denial of service. ( CVE-2021-21704 )
It was discovered that PHP incorrectly handled the FILTER_VALIDATE_URL
check. A remote attacker could possibly use this issue to perform a server-
side request forgery attack. ( CVE-2021-21705 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04
o php7.0-cgi - 7.0.33-0ubuntu0.16.04.16+esm1
Available with UA Infra or UA Desktop
o php7.0-fpm - 7.0.33-0ubuntu0.16.04.16+esm1
Available with UA Infra or UA Desktop
o php7.0-cli - 7.0.33-0ubuntu0.16.04.16+esm1
Available with UA Infra or UA Desktop
o libapache2-mod-php7.0 - 7.0.33-0ubuntu0.16.04.16+esm1
Available with UA Infra or UA Desktop
Ubuntu 14.04
o php5-cgi - 5.5.9+dfsg-1ubuntu4.29+esm14
Available with UA Infra or UA Desktop
o libapache2-mod-php5 - 5.5.9+dfsg-1ubuntu4.29+esm14
Available with UA Infra or UA Desktop
o php5-fpm - 5.5.9+dfsg-1ubuntu4.29+esm14
Available with UA Infra or UA Desktop
o php5-cli - 5.5.9+dfsg-1ubuntu4.29+esm14
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-21702
o CVE-2020-7071
o CVE-2021-21705
o CVE-2020-7068
o CVE-2021-21704
Related notices
o USN-5006-1 : php7.4-zip, php7.2-enchant, php7.2-snmp, php7.2-zip,
php7.4-xsl, php7.2-pgsql, php7.4-curl, php7.2-xml, php7.4-phpdbg,
php7.4-opcache, php7.2-intl, php7.4-cgi, php7.4-snmp, php7.2-pspell,
php7.2-opcache, php7.4-bcmath, php7.4-mysql, php7.2, php7.2-bcmath,
php7.2-ldap, php7.4-common, php7.4-dev, php7.4-ldap, php7.4-gmp,
php7.4-pspell, php7.4-xml, php7.4-intl, php7.4-readline, php7.4-xmlrpc,
php7.4-odbc, php7.4-fpm, php7.2-cli, php7.2-common, php7.2-dba,
php7.4-tidy, php7.4-enchant, php7.4-soap, php7.4-sqlite3, php7.4-pgsql,
php7.4-dba, php7.4-gd, php7.2-fpm, libphp7.4-embed, php7.4-cli, php7.2-cgi,
php7.4-sybase, php7.4-bz2, php7.2-bz2, php7.2-soap, php7.2-mbstring,
php7.2-tidy, php7.4-interbase, php7.2-xmlrpc, php7.2-sqlite3,
libapache2-mod-php7.4, php7.2-curl, php7.2-imap, libapache2-mod-php7.2,
php7.2-json, php7.2-xsl, php7.2-interbase, php7.4-imap, php7.4-mbstring,
libphp7.2-embed, php7.2-mysql, php7.2-readline, php7.2-phpdbg, php7.2-odbc,
php7.2-recode, php7.4-json, php7.4, php7.2-sybase, php7.2-gmp, php7.2-dev,
php7.2-gd
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