Amazon Linux AMI update for php72, php73

1) Resource exhaustion

EUVDB-ID: #VU28318

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11048

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the way PHP handles long filenames or field names during file upload. A remote attacker can supply an overly long filename to the application that will lead PHP engine to try to allocate oversized memory storage, hit the memory limit and stop processing the request, without cleaning up temporary files created by upload request. This will lead to accumulation of uncleaned temporary files exhausting the disk space on the target server.

Mitigation

Update the affected packages:

i686:
    php72-devel-7.2.31-1.23.amzn1.i686
    php72-snmp-7.2.31-1.23.amzn1.i686
    php72-xmlrpc-7.2.31-1.23.amzn1.i686
    php72-odbc-7.2.31-1.23.amzn1.i686
    php72-intl-7.2.31-1.23.amzn1.i686
    php72-fpm-7.2.31-1.23.amzn1.i686
    php72-pgsql-7.2.31-1.23.amzn1.i686
    php72-gmp-7.2.31-1.23.amzn1.i686
    php72-gd-7.2.31-1.23.amzn1.i686
    php72-ldap-7.2.31-1.23.amzn1.i686
    php72-pdo-dblib-7.2.31-1.23.amzn1.i686
    php72-embedded-7.2.31-1.23.amzn1.i686
    php72-soap-7.2.31-1.23.amzn1.i686
    php72-mysqlnd-7.2.31-1.23.amzn1.i686
    php72-debuginfo-7.2.31-1.23.amzn1.i686
    php72-enchant-7.2.31-1.23.amzn1.i686
    php72-process-7.2.31-1.23.amzn1.i686
    php72-bcmath-7.2.31-1.23.amzn1.i686
    php72-pdo-7.2.31-1.23.amzn1.i686
    php72-pspell-7.2.31-1.23.amzn1.i686
    php72-json-7.2.31-1.23.amzn1.i686
    php72-dba-7.2.31-1.23.amzn1.i686
    php72-xml-7.2.31-1.23.amzn1.i686
    php72-imap-7.2.31-1.23.amzn1.i686
    php72-cli-7.2.31-1.23.amzn1.i686
    php72-tidy-7.2.31-1.23.amzn1.i686
    php72-opcache-7.2.31-1.23.amzn1.i686
    php72-7.2.31-1.23.amzn1.i686
    php72-mbstring-7.2.31-1.23.amzn1.i686
    php72-common-7.2.31-1.23.amzn1.i686
    php72-dbg-7.2.31-1.23.amzn1.i686
    php72-recode-7.2.31-1.23.amzn1.i686
    php73-embedded-7.3.19-1.26.amzn1.i686
    php73-odbc-7.3.19-1.26.amzn1.i686
    php73-process-7.3.19-1.26.amzn1.i686
    php73-pgsql-7.3.19-1.26.amzn1.i686
    php73-devel-7.3.19-1.26.amzn1.i686
    php73-bcmath-7.3.19-1.26.amzn1.i686
    php73-pdo-7.3.19-1.26.amzn1.i686
    php73-debuginfo-7.3.19-1.26.amzn1.i686
    php73-soap-7.3.19-1.26.amzn1.i686
    php73-enchant-7.3.19-1.26.amzn1.i686
    php73-7.3.19-1.26.amzn1.i686
    php73-intl-7.3.19-1.26.amzn1.i686
    php73-fpm-7.3.19-1.26.amzn1.i686
    php73-dba-7.3.19-1.26.amzn1.i686
    php73-mbstring-7.3.19-1.26.amzn1.i686
    php73-xml-7.3.19-1.26.amzn1.i686
    php73-ldap-7.3.19-1.26.amzn1.i686
    php73-mysqlnd-7.3.19-1.26.amzn1.i686
    php73-cli-7.3.19-1.26.amzn1.i686
    php73-xmlrpc-7.3.19-1.26.amzn1.i686
    php73-pspell-7.3.19-1.26.amzn1.i686
    php73-opcache-7.3.19-1.26.amzn1.i686
    php73-json-7.3.19-1.26.amzn1.i686
    php73-snmp-7.3.19-1.26.amzn1.i686
    php73-imap-7.3.19-1.26.amzn1.i686
    php73-gmp-7.3.19-1.26.amzn1.i686
    php73-dbg-7.3.19-1.26.amzn1.i686
    php73-recode-7.3.19-1.26.amzn1.i686
    php73-gd-7.3.19-1.26.amzn1.i686
    php73-pdo-dblib-7.3.19-1.26.amzn1.i686
    php73-common-7.3.19-1.26.amzn1.i686
    php73-tidy-7.3.19-1.26.amzn1.i686

src:
    php72-7.2.31-1.23.amzn1.src
    php73-7.3.19-1.26.amzn1.src

x86_64:
    php72-ldap-7.2.31-1.23.amzn1.x86_64
    php72-embedded-7.2.31-1.23.amzn1.x86_64
    php72-odbc-7.2.31-1.23.amzn1.x86_64
    php72-gd-7.2.31-1.23.amzn1.x86_64
    php72-opcache-7.2.31-1.23.amzn1.x86_64
    php72-cli-7.2.31-1.23.amzn1.x86_64
    php72-fpm-7.2.31-1.23.amzn1.x86_64
    php72-mysqlnd-7.2.31-1.23.amzn1.x86_64
    php72-snmp-7.2.31-1.23.amzn1.x86_64
    php72-xml-7.2.31-1.23.amzn1.x86_64
    php72-imap-7.2.31-1.23.amzn1.x86_64
    php72-process-7.2.31-1.23.amzn1.x86_64
    php72-xmlrpc-7.2.31-1.23.amzn1.x86_64
    php72-json-7.2.31-1.23.amzn1.x86_64
    php72-intl-7.2.31-1.23.amzn1.x86_64
    php72-mbstring-7.2.31-1.23.amzn1.x86_64
    php72-tidy-7.2.31-1.23.amzn1.x86_64
    php72-common-7.2.31-1.23.amzn1.x86_64
    php72-7.2.31-1.23.amzn1.x86_64
    php72-recode-7.2.31-1.23.amzn1.x86_64
    php72-gmp-7.2.31-1.23.amzn1.x86_64
    php72-soap-7.2.31-1.23.amzn1.x86_64
    php72-debuginfo-7.2.31-1.23.amzn1.x86_64
    php72-enchant-7.2.31-1.23.amzn1.x86_64
    php72-pdo-7.2.31-1.23.amzn1.x86_64
    php72-devel-7.2.31-1.23.amzn1.x86_64
    php72-pdo-dblib-7.2.31-1.23.amzn1.x86_64
    php72-bcmath-7.2.31-1.23.amzn1.x86_64
    php72-dba-7.2.31-1.23.amzn1.x86_64
    php72-dbg-7.2.31-1.23.amzn1.x86_64
    php72-pspell-7.2.31-1.23.amzn1.x86_64
    php72-pgsql-7.2.31-1.23.amzn1.x86_64
    php73-pdo-7.3.19-1.26.amzn1.x86_64
    php73-pgsql-7.3.19-1.26.amzn1.x86_64
    php73-common-7.3.19-1.26.amzn1.x86_64
    php73-opcache-7.3.19-1.26.amzn1.x86_64
    php73-embedded-7.3.19-1.26.amzn1.x86_64
    php73-recode-7.3.19-1.26.amzn1.x86_64
    php73-snmp-7.3.19-1.26.amzn1.x86_64
    php73-ldap-7.3.19-1.26.amzn1.x86_64
    php73-debuginfo-7.3.19-1.26.amzn1.x86_64
    php73-mbstring-7.3.19-1.26.amzn1.x86_64
    php73-bcmath-7.3.19-1.26.amzn1.x86_64
    php73-cli-7.3.19-1.26.amzn1.x86_64
    php73-intl-7.3.19-1.26.amzn1.x86_64
    php73-dbg-7.3.19-1.26.amzn1.x86_64
    php73-soap-7.3.19-1.26.amzn1.x86_64
    php73-json-7.3.19-1.26.amzn1.x86_64
    php73-process-7.3.19-1.26.amzn1.x86_64
    php73-7.3.19-1.26.amzn1.x86_64
    php73-gd-7.3.19-1.26.amzn1.x86_64
    php73-pdo-dblib-7.3.19-1.26.amzn1.x86_64
    php73-enchant-7.3.19-1.26.amzn1.x86_64
    php73-dba-7.3.19-1.26.amzn1.x86_64
    php73-devel-7.3.19-1.26.amzn1.x86_64
    php73-xml-7.3.19-1.26.amzn1.x86_64
    php73-pspell-7.3.19-1.26.amzn1.x86_64
    php73-mysqlnd-7.3.19-1.26.amzn1.x86_64
    php73-gmp-7.3.19-1.26.amzn1.x86_64
    php73-tidy-7.3.19-1.26.amzn1.x86_64
    php73-xmlrpc-7.3.19-1.26.amzn1.x86_64
    php73-odbc-7.3.19-1.26.amzn1.x86_64
    php73-fpm-7.3.19-1.26.amzn1.x86_64
    php73-imap-7.3.19-1.26.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1397.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.