Reflected XSS in .phar 404 page

An issue was discovered in PHP; there is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file. (CVE-2018-5712)

Denial of Service (DoS) via infinite loop in libgd gdImageCreateFromGifCtx function in ext/gd/libgd/gd_gif_in.c

The gd_gif_in.c file in the GD Graphics Library (aka libgd), as used in PHP has an integer signedness error that leads to an infinite loop via a crafted GIF file, as demonstrated by a call to the imagecreatefromgif or imagecreatefromstring PHP function. This is related to GetCode_ and gdImageCreateFromGifCtx. (CVE-2018-5711)

**PHP version 7.1.17** (26 Apr 2018)

**Date:**

  - Fixed bug php#76131 (mismatch arginfo for date_create).
    (carusogabriel)

**Exif:**

  - Fixed bug php#76130 (Heap Buffer Overflow (READ: 1786)     in exif_iif_add_value). (Stas)

**FPM:**

  - Fixed bug php#68440 (ERROR: failed to reload: execvp()     failed: Argument list too long). (Jacob Hipps)

  - Fixed incorrect write to getenv result in FPM reload.
    (Jakub Zelenka)

**GD:**

  - Fixed bug php#52070 (imagedashedline() - dashed line     sometimes is not visible). (cmb)

**iconv:**

  - Fixed bug php#76249 (stream filter convert.iconv leads     to infinite loop on invalid sequence). (Stas)

**intl:**

  - Fixed bug php#76153 (Intl compilation fails with icu4c     61.1). (Anatol)

**ldap:**

  - Fixed bug php#76248 (Malicious LDAP-Server Response     causes Crash). (Stas)

**mbstring:**

  - Fixed bug php#75944 (Wrong cp1251 detection). (dmk001)

  - Fixed bug php#76113 (mbstring does not build with     Oniguruma 6.8.1). (chrullrich, cmb)

**Phar:**

  - Fixed bug php#76129 (fix for CVE-2018-5712 may not be     complete). (Stas)

**phpdbg:**

  - Fixed bug php#76143 (Memory corruption: arbitrary NUL     overwrite). (Laruence)

**SPL:**

  - Fixed bug php#76131 (mismatch arginfo for splarray     constructor). (carusogabriel)

**standard:**

  - Fixed bug php#75996 (incorrect url in header for     mt_rand). (tatarbj)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

**PHP version 7.2.5** (26 Apr 2018)

**Core:**

  - Fixed bug php#75722 (Convert valgrind detection to     configure option). (Michael Heimpold)

**Date:**

  - Fixed bug php#76131 (mismatch arginfo for date_create).
    (carusogabriel)

**Exif:**

  - Fixed bug php#76130 (Heap Buffer Overflow (READ: 1786)     in exif_iif_add_value). (Stas)

**FPM:**

  - Fixed bug php#68440 (ERROR: failed to reload: execvp()     failed: Argument list too long). (Jacob Hipps)

  - Fixed incorrect write to getenv result in FPM reload.
    (Jakub Zelenka)

**GD:**

  - Fixed bug php#52070 (imagedashedline() - dashed line     sometimes is not visible). (cmb)

**intl:**

  - Fixed bug php#76153 (Intl compilation fails with icu4c     61.1). (Anatol)

**iconv:**

  - Fixed bug php#76249 (stream filter convert.iconv leads     to infinite loop on invalid sequence). (Stas)

**ldap:**

  - Fixed bug php#76248 (Malicious LDAP-Server Response     causes Crash). (Stas)

**mbstring:**

  - Fixed bug php#75944 (Wrong cp1251 detection). (dmk001)

  - Fixed bug php#76113 (mbstring does not build with     Oniguruma 6.8.1). (chrullrich, cmb)

**ODBC:**

  - Fixed bug php#76088 (ODBC functions are not available by     default on Windows). (cmb)

**Opcache:**

  - Fixed bug php#76094 (Access violation when using     opcache). (Laruence)

**Phar:**

  - Fixed bug php#76129 (fix for CVE-2018-5712 may not be     complete). (Stas)

**phpdbg:**

  - Fixed bug php#76143 (Memory corruption: arbitrary NUL     overwrite). (Laruence)

**SPL:**

  - Fixed bug php#76131 (mismatch arginfo for splarray     constructor). (carusogabriel)

**standard:**

  - Fixed bug php#74139 (mail.add_x_header default     inconsistent with docs). (cmb)

  - Fixed bug php#75996 (incorrect url in header for     mt_rand). (tatarbj)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:1296 advisory.

    PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

    The following packages have been upgraded to a later upstream version: rh-php70-php (7.0.27). (BZ#1518843)

    Security Fix(es):

    * php: Heap overflow in mysqlnd when not receiving UNSIGNED_FLAG in BIT field (CVE-2016-7412)

    * php: Use after free in wddx_deserialize (CVE-2016-7413)

    * php: Out of bounds heap read when verifying signature of zip phar in phar_parse_zipfile (CVE-2016-7414)

    * php: Stack based buffer overflow in msgfmt_format_message (CVE-2016-7416)

    * php: Missing type check when unserializing SplArray (CVE-2016-7417)

    * php: Null pointer dereference in php_wddx_push_element (CVE-2016-7418)

    * php: Use-after-free vulnerability when resizing the 'properties' hash table of a serialized object     (CVE-2016-7479)

    * php: Invalid read when wddx decodes empty boolean element (CVE-2016-9935)

    * php: Use After Free in unserialize() (CVE-2016-9936)

    * php: Wrong calculation in exif_convert_any_to_int function (CVE-2016-10158)

    * php: Integer overflow in phar_parse_pharfile (CVE-2016-10159)

    * php: Off-by-one error in phar_parse_pharfile when loading crafted phar archive (CVE-2016-10160)

    * php: Out-of-bounds heap read on unserialize in finish_nested_data() (CVE-2016-10161)

    * php: Null pointer dereference when unserializing PHP object (CVE-2016-10162)

    * gd: DoS vulnerability in gdImageCreateFromGd2Ctx() (CVE-2016-10167)

    * gd: Integer overflow in gd_io.c (CVE-2016-10168)

    * php: Use of uninitialized memory in unserialize() (CVE-2017-5340)

    * php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function (CVE-2017-7890)

    * oniguruma: Out-of-bounds stack read in match_at() during regular expression searching (CVE-2017-9224)

    * oniguruma: Heap buffer overflow in next_state_val() during regular expression compilation     (CVE-2017-9226)

    * oniguruma: Out-of-bounds stack read in mbc_enc_len() during regular expression searching (CVE-2017-9227)

    * oniguruma: Out-of-bounds heap write in bitset_set_range() (CVE-2017-9228)

    * oniguruma: Invalid pointer dereference in left_adjust_char_head() (CVE-2017-9229)

    * php: Incorrect WDDX deserialization of boolean parameters leads to DoS (CVE-2017-11143)

    * php: Incorrect return value check of OpenSSL sealing function leads to crash (CVE-2017-11144)

    * php: Out-of-bounds read in phar_parse_pharfile (CVE-2017-11147)

    * php: Stack-based buffer over-read in msgfmt_parse_message function (CVE-2017-11362)

    * php: Stack based 1-byte buffer over-write in zend_ini_do_op() function Zend/zend_ini_parser.c     (CVE-2017-11628)

    * php: heap use after free in ext/standard/var_unserializer.re (CVE-2017-12932)

    * php: heap use after free in ext/standard/var_unserializer.re (CVE-2017-12934)

    * php: reflected XSS in .phar 404 page (CVE-2018-5712)

    * php, gd: Stack overflow in gdImageFillToBorder on truecolor images (CVE-2016-9933)

    * php: NULL Pointer Dereference in WDDX Packet Deserialization with PDORow (CVE-2016-9934)

    * php: wddx_deserialize() heap out-of-bound read via php_parse_date() (CVE-2017-11145)

    * php: buffer over-read in finish_nested_data function (CVE-2017-12933)

    * php: Out-of-bound read in timelib_meridian() (CVE-2017-16642)

    * php: Denial of Service (DoS) via infinite loop in libgd gdImageCreateFromGifCtx function in     ext/gd/libgd/gd_gif_in.c (CVE-2018-5711)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For details, see the Red Hat Software Collections 3.1 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before     7.2.1. There is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file.
    (CVE-2018-5712)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1112 advisory.

    - fix underflow in env_path_info in fpm_main.c CVE-2019-11043
    - fix stack-buffer-overflow while parsing HTTP response CVE-2018-7584
    - fix out-of-bounds read in base64_decode_xmlrpc CVE-2019-9024
    - fix reflected XSS in phar 404 page CVE-2018-5712

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has php packages installed that are affected by multiple vulnerabilities:

  - In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a     stack-based buffer under-read while parsing an HTTP response in the php_stream_url_wrap_http_ex function     in ext/standard/http_fopen_wrapper.c. This subsequently results in copying a large string. (CVE-2018-7584)

  - An issue was discovered in ext/phar/phar_object.c in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before     7.1.17, and 7.2.x before 7.2.5. There is Reflected XSS on the PHAR 403 and 404 error pages via request     data of a request for a .phar file. NOTE: this vulnerability exists because of an incomplete fix for     CVE-2018-5712. (CVE-2018-10547)

  - An issue was discovered in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before     7.2.1. There is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file.
    (CVE-2018-5712)

  - An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before     7.3.1. xmlrpc_decode() can allow a hostile XMLRPC server to cause PHP to read memory outside of allocated     areas in base64_decode_xmlrpc in ext/xmlrpc/libxmlrpc/base64.c. (CVE-2019-9024)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has php packages installed that are affected by multiple vulnerabilities:

  - In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a     stack-based buffer under-read while parsing an HTTP response in the php_stream_url_wrap_http_ex function     in ext/standard/http_fopen_wrapper.c. This subsequently results in copying a large string. (CVE-2018-7584)

  - An issue was discovered in ext/phar/phar_object.c in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before     7.1.17, and 7.2.x before 7.2.5. There is Reflected XSS on the PHAR 403 and 404 error pages via request     data of a request for a .phar file. NOTE: this vulnerability exists because of an incomplete fix for     CVE-2018-5712. (CVE-2018-10547)

  - An issue was discovered in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before     7.2.1. There is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file.
    (CVE-2018-5712)

  - An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before     7.3.1. xmlrpc_decode() can allow a hostile XMLRPC server to cause PHP to read memory outside of allocated     areas in base64_decode_xmlrpc in ext/xmlrpc/libxmlrpc/base64.c. (CVE-2019-9024)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to its banner, the version of PHP running on the remote web server is 7.1.x prior to 7.1.13. It is, therefore, affected by the following vulnerabilities :

  - A denial of service (DoS) vulnerability exists in the     imagecreatefromgif and imagecreatefromstring functions     of the gd_gif_in.c script within GD Graphics Library     (libgd) due to an integer signedness error. An     unauthenticated, remote attacker can exploit this issue,     via a crafted GIF file, to cause the applicaiton to stop     responding. (CVE-2018-5711)

  - A cross-site scripting (XSS) vulnerability exists due to     improper validation of .phar file before returning it to     users. An unauthenticated, remote attacker can exploit     this, by convincing a user to click a specially crafted     URL, to execute arbitrary script code in a user's browser     session. (CVE-2018-5712)

  - A denial of service (DoS) vulnerability exists in the     ext/standard/http_fopen_wrapper.c script due to     http_header_value possibly being a NULL value in an atoi     call. An unauthenticated, remote attacker can exploit     this issue, via a specifically crafted HTTP response, to     cause the application to stop responding. (CVE-2018-14884)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
106691	Amazon Linux AMI : php56 / php70,php71 (ALAS-2018-946)	Nessus	Amazon Linux Local Security Checks	2/9/2018	10/30/2025	medium
109560	Fedora 26 : php (2018-6071a600e8)	Nessus	Fedora Local Security Checks	5/4/2018	10/11/2024	high
120886	Fedora 28 : php (2018-ee6707d519)	Nessus	Fedora Local Security Checks	1/3/2019	6/28/2024	high
194027	RHEL 6 / 7 : rh-php70-php (RHSA-2018:1296)	Nessus	Red Hat Local Security Checks	4/27/2024	4/15/2025	critical
221850	Linux Distros Unpatched Vulnerability : CVE-2018-5712	Nessus	Misc.	3/4/2025	8/18/2025	medium
180748	Oracle Linux 7 : php (ELSA-2020-1112)	Nessus	Oracle Linux Local Security Checks	9/7/2023	10/23/2024	critical
143917	NewStart CGSL CORE 5.04 / MAIN 5.04 : php Multiple Vulnerabilities (NS-SA-2020-0059)	Nessus	NewStart CGSL Local Security Checks	12/9/2020	12/10/2020	critical
143988	NewStart CGSL CORE 5.05 / MAIN 5.05 : php Multiple Vulnerabilities (NS-SA-2020-0090)	Nessus	NewStart CGSL Local Security Checks	12/9/2020	12/10/2020	critical
105773	PHP 7.1.x < 7.1.13 Multiple Vulnerabilities	Nessus	CGI abuses	1/12/2018	11/6/2025	medium

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