Amazon Linux AMI update for php72

1) Heap-based buffer overflow

EUVDB-ID: #VU22303

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-18218

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the cdf_read_property_info() function in cdf.c in file due to improper restrictions of the number of CDF_VECTOR elements. A local user can place a specially crafted CDF (Composite Document File) file on the system, trick the victim into reading it with the affected software, trigger heap-based buffer overflow (4-byte out-of-bounds write) and execute arbitrary code on the target system with elevated privileges.

Mitigation

Update the affected packages:

i686:
    php72-debuginfo-7.2.26-1.19.amzn1.i686
    php72-pspell-7.2.26-1.19.amzn1.i686
    php72-pdo-dblib-7.2.26-1.19.amzn1.i686
    php72-gd-7.2.26-1.19.amzn1.i686
    php72-common-7.2.26-1.19.amzn1.i686
    php72-enchant-7.2.26-1.19.amzn1.i686
    php72-tidy-7.2.26-1.19.amzn1.i686
    php72-embedded-7.2.26-1.19.amzn1.i686
    php72-soap-7.2.26-1.19.amzn1.i686
    php72-xmlrpc-7.2.26-1.19.amzn1.i686
    php72-snmp-7.2.26-1.19.amzn1.i686
    php72-pdo-7.2.26-1.19.amzn1.i686
    php72-opcache-7.2.26-1.19.amzn1.i686
    php72-dba-7.2.26-1.19.amzn1.i686
    php72-json-7.2.26-1.19.amzn1.i686
    php72-mysqlnd-7.2.26-1.19.amzn1.i686
    php72-ldap-7.2.26-1.19.amzn1.i686
    php72-recode-7.2.26-1.19.amzn1.i686
    php72-cli-7.2.26-1.19.amzn1.i686
    php72-pgsql-7.2.26-1.19.amzn1.i686
    php72-intl-7.2.26-1.19.amzn1.i686
    php72-odbc-7.2.26-1.19.amzn1.i686
    php72-process-7.2.26-1.19.amzn1.i686
    php72-bcmath-7.2.26-1.19.amzn1.i686
    php72-devel-7.2.26-1.19.amzn1.i686
    php72-xml-7.2.26-1.19.amzn1.i686
    php72-7.2.26-1.19.amzn1.i686
    php72-gmp-7.2.26-1.19.amzn1.i686
    php72-dbg-7.2.26-1.19.amzn1.i686
    php72-mbstring-7.2.26-1.19.amzn1.i686
    php72-fpm-7.2.26-1.19.amzn1.i686
    php72-imap-7.2.26-1.19.amzn1.i686

src:
    php72-7.2.26-1.19.amzn1.src

x86_64:
    php72-tidy-7.2.26-1.19.amzn1.x86_64
    php72-dba-7.2.26-1.19.amzn1.x86_64
    php72-pdo-7.2.26-1.19.amzn1.x86_64
    php72-gmp-7.2.26-1.19.amzn1.x86_64
    php72-cli-7.2.26-1.19.amzn1.x86_64
    php72-mbstring-7.2.26-1.19.amzn1.x86_64
    php72-xmlrpc-7.2.26-1.19.amzn1.x86_64
    php72-bcmath-7.2.26-1.19.amzn1.x86_64
    php72-pgsql-7.2.26-1.19.amzn1.x86_64
    php72-soap-7.2.26-1.19.amzn1.x86_64
    php72-xml-7.2.26-1.19.amzn1.x86_64
    php72-embedded-7.2.26-1.19.amzn1.x86_64
    php72-intl-7.2.26-1.19.amzn1.x86_64
    php72-snmp-7.2.26-1.19.amzn1.x86_64
    php72-pdo-dblib-7.2.26-1.19.amzn1.x86_64
    php72-imap-7.2.26-1.19.amzn1.x86_64
    php72-debuginfo-7.2.26-1.19.amzn1.x86_64
    php72-odbc-7.2.26-1.19.amzn1.x86_64
    php72-enchant-7.2.26-1.19.amzn1.x86_64
    php72-json-7.2.26-1.19.amzn1.x86_64
    php72-7.2.26-1.19.amzn1.x86_64
    php72-process-7.2.26-1.19.amzn1.x86_64
    php72-ldap-7.2.26-1.19.amzn1.x86_64
    php72-common-7.2.26-1.19.amzn1.x86_64
    php72-dbg-7.2.26-1.19.amzn1.x86_64
    php72-devel-7.2.26-1.19.amzn1.x86_64
    php72-opcache-7.2.26-1.19.amzn1.x86_64
    php72-recode-7.2.26-1.19.amzn1.x86_64
    php72-gd-7.2.26-1.19.amzn1.x86_64
    php72-pspell-7.2.26-1.19.amzn1.x86_64
    php72-fpm-7.2.26-1.19.amzn1.x86_64
    php72-mysqlnd-7.2.26-1.19.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

php72: before 7.2.26-1.19

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:php72:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2024-1921.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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