Amazon Linux AMI : php (ALAS-2011-7)

high Nessus Plugin ID 78268
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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

PHP before 5.3.7 does not properly check the return values of the malloc, calloc, and realloc library functions, which allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger a buffer overflow by leveraging the ability to provide an arbitrary value for a function argument, related to (1) ext/curl/interface.c, (2) ext/date/lib/parse_date.c, (3) ext/date/lib/parse_iso_intervals.c, (4) ext/date/lib/parse_tz.c, (5) ext/date/lib/timelib.c, (6) ext/pdo_odbc/pdo_odbc.c, (7) ext/reflection/php_reflection.c, (8) ext/soap/php_sdl.c, (9) ext/xmlrpc/libxmlrpc/base64.c, (10) TSRM/tsrm_win32.c, and (11) the strtotime function.

The is_a function in PHP 5.3.7 and 5.3.8 triggers a call to the
__autoload function, which makes it easier for remote attackers to execute arbitrary code by providing a crafted URL and leveraging potentially unsafe behavior in certain PEAR packages and custom autoloaders.

php: changes to is_a() in 5.3.7 may allow arbitrary code execution with certain code

A signedness issue was found in the way the PHP crypt() function handled 8-bit characters in passwords when using Blowfish hashing. Up to three characters immediately preceding a non-ASCII character (one with the high bit set) had no effect on the hash result, thus shortening the effective password length. This made brute-force guessing more efficient as several different passwords were hashed to the same value.

A signedness issue was found in the way the crypt() function in the PostgreSQL pgcrypto module handled 8-bit characters in passwords when using Blowfish hashing. Up to three characters immediately preceding a non-ASCII character (one with the high bit set) had no effect on the hash result, thus shortening the effective password length. This made brute-force guessing more efficient as several different passwords were hashed to the same value.

crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which makes it easier for context-dependent attackers to determine a cleartext password by leveraging knowledge of a password hash.

A stack-based buffer overflow flaw was found in the way the PHP socket extension handled long AF_UNIX socket addresses. An attacker able to make a PHP script connect to a long AF_UNIX socket address could use this flaw to crash the PHP interpreter.

Stack-based buffer overflow in the socket_connect function in ext/sockets/sockets.c in PHP 5.3.3 through 5.3.6 might allow context-dependent attackers to execute arbitrary code via a long pathname for a UNIX socket.

The rfc1867_post_handler function in main/rfc1867.c in PHP before 5.3.7 does not properly restrict filenames in multipart/form-data POST requests, which allows remote attackers to conduct absolute path traversal attacks, and possibly create or overwrite arbitrary files, via a crafted upload request, related to a 'file path injection vulnerability.'

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory.

The rfc1867_post_handler function in main/rfc1867.c in PHP before 5.3.7 does not properly restrict filenames in multipart/form-data POST requests, which allows remote attackers to conduct absolute path traversal attacks, and possibly create or overwrite arbitrary files, via a crafted upload request, related to a 'file path injection vulnerability.'

Use-after-free vulnerability in the substr_replace function in PHP 5.3.6 and earlier allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact by using the same variable for multiple arguments.

A use-after-free flaw was found in the PHP substr_replace() function.
If a PHP script used the same variable as multiple function arguments, a remote attacker could possibly use this to crash the PHP interpreter or, possibly, execute arbitrary code.

Solution

Run 'yum update php' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2011-7.html

Plugin Details

Severity: High

ID: 78268

File Name: ala_ALAS-2011-7.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/12/2014

Updated: 7/10/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: High

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:php, p-cpe:/a:amazon:linux:php-bcmath, p-cpe:/a:amazon:linux:php-cli, p-cpe:/a:amazon:linux:php-common, p-cpe:/a:amazon:linux:php-dba, p-cpe:/a:amazon:linux:php-debuginfo, p-cpe:/a:amazon:linux:php-devel, p-cpe:/a:amazon:linux:php-embedded, p-cpe:/a:amazon:linux:php-fpm, p-cpe:/a:amazon:linux:php-gd, p-cpe:/a:amazon:linux:php-imap, p-cpe:/a:amazon:linux:php-intl, p-cpe:/a:amazon:linux:php-ldap, p-cpe:/a:amazon:linux:php-mbstring, p-cpe:/a:amazon:linux:php-mcrypt, p-cpe:/a:amazon:linux:php-mssql, p-cpe:/a:amazon:linux:php-mysql, p-cpe:/a:amazon:linux:php-odbc, p-cpe:/a:amazon:linux:php-pdo, p-cpe:/a:amazon:linux:php-pgsql, p-cpe:/a:amazon:linux:php-process, p-cpe:/a:amazon:linux:php-pspell, p-cpe:/a:amazon:linux:php-snmp, p-cpe:/a:amazon:linux:php-soap, p-cpe:/a:amazon:linux:php-tidy, p-cpe:/a:amazon:linux:php-xml, p-cpe:/a:amazon:linux:php-xmlrpc, p-cpe:/a:amazon:linux:php-zts, cpe:/o:amazon:linux

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 9/14/2014

Vulnerability Publication Date: 3/18/2011

Reference Information

CVE: CVE-2011-1148, CVE-2011-1938, CVE-2011-2202, CVE-2011-2483, CVE-2011-3182, CVE-2011-3379

ALAS: 2011-7