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Vulnerability Details : CVE-2012-1823

sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle query strings that lack an = (equals sign) character, which allows remote attackers to execute arbitrary code by placing command-line options in the query string, related to lack of skipping a certain php_getopt for the 'd' case.
Publish Date : 2012-05-11 Last Update Date : 2012-11-06
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- CVSS Scores & Vulnerability Types

Cvss Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Execute Code
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
6.8
 AV:N/AC:M/Au:N/C:P/I:P/A:P 2012-05-03 2012-05-03
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @ cvedetails.com

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2012:0546: php security update (Critical) oval:com.redhat.rhsa:def:20120546 unix
RHSA-2012:0547: php53 security update (Critical) oval:com.redhat.rhsa:def:20120547 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-1823

# Product Type Vendor Product Version Update Edition Language
1 Application PHP PHP 5.0.0 RC1 Details Vulnerabilities
2 Application PHP PHP 5.0.0 Details Vulnerabilities
3 Application PHP PHP 5.0.0 RC3 Details Vulnerabilities
4 Application PHP PHP 5.0.0 Beta4 Details Vulnerabilities
5 Application PHP PHP 5.0.0 Beta1 Details Vulnerabilities
6 Application PHP PHP 5.0.0 RC2 Details Vulnerabilities
7 Application PHP PHP 5.0.0 Beta3 Details Vulnerabilities
8 Application PHP PHP 5.0.0 Beta2 Details Vulnerabilities
9 Application PHP PHP 5.0.1 Details Vulnerabilities
10 Application PHP PHP 5.0.2 Details Vulnerabilities
11 Application PHP PHP 5.0.3 Details Vulnerabilities
12 Application PHP PHP 5.0.4 Details Vulnerabilities
13 Application PHP PHP 5.0.5 Details Vulnerabilities
14 Application PHP PHP 5.1.0 Details Vulnerabilities
15 Application PHP PHP 5.1.1 Details Vulnerabilities
16 Application PHP PHP 5.1.2 Details Vulnerabilities
17 Application PHP PHP 5.1.3 Details Vulnerabilities
18 Application PHP PHP 5.1.4 Details Vulnerabilities
19 Application PHP PHP 5.1.5 Details Vulnerabilities
20 Application PHP PHP 5.1.6 Details Vulnerabilities
21 Application PHP PHP 5.2.0 Details Vulnerabilities
22 Application PHP PHP 5.2.1 Details Vulnerabilities
23 Application PHP PHP 5.2.2 Details Vulnerabilities
24 Application PHP PHP 5.2.3 Details Vulnerabilities
25 Application PHP PHP 5.2.4 Details Vulnerabilities
26 Application PHP PHP 5.2.5 Details Vulnerabilities
27 Application PHP PHP 5.2.6 Details Vulnerabilities
28 Application PHP PHP 5.2.7 Details Vulnerabilities
29 Application PHP PHP 5.2.8 Details Vulnerabilities
30 Application PHP PHP 5.2.9 Details Vulnerabilities
31 Application PHP PHP 5.2.10 Details Vulnerabilities
32 Application PHP PHP 5.2.11 Details Vulnerabilities
33 Application PHP PHP 5.2.12 Details Vulnerabilities
34 Application PHP PHP 5.2.13 Details Vulnerabilities
35 Application PHP PHP 5.2.14 Details Vulnerabilities
36 Application PHP PHP 5.2.15 Details Vulnerabilities
37 Application PHP PHP 5.2.16 Details Vulnerabilities
38 Application PHP PHP 5.2.17 Details Vulnerabilities
39 Application PHP PHP 5.3.0 Details Vulnerabilities
40 Application PHP PHP 5.3.1 Details Vulnerabilities
41 Application PHP PHP 5.3.2 Details Vulnerabilities
42 Application PHP PHP 5.3.3 Details Vulnerabilities
43 Application PHP PHP 5.3.4 Details Vulnerabilities
44 Application PHP PHP 5.3.5 Details Vulnerabilities
45 Application PHP PHP 5.3.6 Details Vulnerabilities
46 Application PHP PHP 5.3.7 Details Vulnerabilities
47 Application PHP PHP 5.3.8 Details Vulnerabilities
48 Application PHP PHP 5.3.9 Details Vulnerabilities
49 Application PHP PHP 5.3.10 Details Vulnerabilities
50 Application PHP PHP 5.3.11 Details Vulnerabilities
51 Application PHP PHP 5.4.0 Details Vulnerabilities
52 Application PHP PHP 5.4.1 Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
PHP PHP 52

- References For CVE-2012-1823

http://www.php.net/archive/2012.php#id2012-05-03-1 CONFIRM
http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
HP SSRT100877
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
APPLE APPLE-SA-2012-09-19-2
http://rhn.redhat.com/errata/RHSA-2012-0547.html
REDHAT RHSA-2012:0547
http://secunia.com/advisories/49087
SECUNIA 49087
http://marc.info/?l=bugtraq&m=134012830914727&w=2
HP SSRT100856
http://secunia.com/advisories/49085
SECUNIA 49085
http://secunia.com/advisories/49065
SECUNIA 49065
http://secunia.com/advisories/49014
SECUNIA 49014
http://rhn.redhat.com/errata/RHSA-2012-0568.html
REDHAT RHSA-2012:0568
http://support.apple.com/kb/HT5501 CONFIRM
http://www.securitytracker.com/id?1027022
SECTRACK 1027022
http://rhn.redhat.com/errata/RHSA-2012-0546.html
REDHAT RHSA-2012:0546
http://www.kb.cert.org/vuls/id/520827
CERT-VN VU#520827
https://bugs.php.net/bug.php?id=61910 CONFIRM
http://www.php.net/ChangeLog-5.php#5.4.2 CONFIRM
https://bugs.php.net/patch-display.php?bug_id=61910&patch=cgi.diff&revision=1335984315&display=1 CONFIRM

- Metasploit Modules Related To CVE-2012-1823

PHP CGI Argument Injection
When run as a CGI, PHP up to version 5.3.12 and 5.4.2 is vulnerable to an argument injection vulnerability. This module takes advantage of the -d flag to set php.ini directives to achieve code execution. From the advisory: "if there is NO unescaped '=' in the query string, the string is split on '+' (encoded space) characters, urldecoded, passed to a function that escapes shell metacharacters (the "encoded in a system-defined manner" from the RFC) and then passes them to the CGI binary."


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