Amazon Linux AMI : php70 (ALAS-2017-867)

High Nessus Plugin ID 102181

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 5.9

Synopsis

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

Description

Out-of-bounds heap write in bitset_set_range() :

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, resulting in an out-of-bounds write memory corruption. (CVE-2017-9228)

Buffer over-read from unitialized data in gdImageCreateFromGifCtx function

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information. (CVE-2017-7890)

Invalid pointer dereference in left_adjust_char_head() :

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition. (CVE-2017-9229)

Heap buffer overflow in next_state_val() during regular expression compilation :

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of \\700 would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.(CVE-2017-9226)

Out-of-bounds stack read in mbc_enc_len() during regular expression searching :

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer. (CVE-2017-9227)

Out-of-bounds stack read in match_at() during regular expression searching :

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.
(CVE-2017-9224)

Solution

Run 'yum update php70' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-867.html

Plugin Details

Severity: High

ID: 102181

File Name: ala_ALAS-2017-867.nasl

Version: 3.4

Type: local

Agent: unix

Published: 2017/08/04

Updated: 2019/07/10

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS v2.0

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:php70, p-cpe:/a:amazon:linux:php70-bcmath, p-cpe:/a:amazon:linux:php70-cli, p-cpe:/a:amazon:linux:php70-common, p-cpe:/a:amazon:linux:php70-dba, p-cpe:/a:amazon:linux:php70-dbg, p-cpe:/a:amazon:linux:php70-debuginfo, p-cpe:/a:amazon:linux:php70-devel, p-cpe:/a:amazon:linux:php70-embedded, p-cpe:/a:amazon:linux:php70-enchant, p-cpe:/a:amazon:linux:php70-fpm, p-cpe:/a:amazon:linux:php70-gd, p-cpe:/a:amazon:linux:php70-gmp, p-cpe:/a:amazon:linux:php70-imap, p-cpe:/a:amazon:linux:php70-intl, p-cpe:/a:amazon:linux:php70-json, p-cpe:/a:amazon:linux:php70-ldap, p-cpe:/a:amazon:linux:php70-mbstring, p-cpe:/a:amazon:linux:php70-mcrypt, p-cpe:/a:amazon:linux:php70-mysqlnd, p-cpe:/a:amazon:linux:php70-odbc, p-cpe:/a:amazon:linux:php70-opcache, p-cpe:/a:amazon:linux:php70-pdo, p-cpe:/a:amazon:linux:php70-pdo-dblib, p-cpe:/a:amazon:linux:php70-pgsql, p-cpe:/a:amazon:linux:php70-process, p-cpe:/a:amazon:linux:php70-pspell, p-cpe:/a:amazon:linux:php70-recode, p-cpe:/a:amazon:linux:php70-snmp, p-cpe:/a:amazon:linux:php70-soap, p-cpe:/a:amazon:linux:php70-tidy, p-cpe:/a:amazon:linux:php70-xml, p-cpe:/a:amazon:linux:php70-xmlrpc, p-cpe:/a:amazon:linux:php70-zip, cpe:/o:amazon:linux

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

Patch Publication Date: 2017/08/04

Vulnerability Publication Date: 2017/05/24

Reference Information

CVE: CVE-2017-7890, CVE-2017-9224, CVE-2017-9226, CVE-2017-9227, CVE-2017-9228, CVE-2017-9229

ALAS: 2017-867