ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products,
    launches an rsh command (by means of the imap_rimap function in c-client/imap4r1.c and the tcp_aopen
    function in osdep/unix/tcp_unix.c) without preventing argument injection, which might allow remote
    attackers to execute arbitrary OS commands if the IMAP server name is untrusted input (e.g., entered by a
    user of a web application) and if rsh has been replaced by a program with different argument semantics.
    For example, if rsh is a link to ssh (as seen on Debian and Ubuntu systems), then the attack can use an
    IMAP server name containing a "-oProxyCommand" argument. (CVE-2018-19518)

  - Integer underflow in the _gdContributionsAlloc function in gd_interpolation.c in the GD Graphics Library
    (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via vectors related to
    decrementing the u variable. (CVE-2016-10166)

  - 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)

  - exif_process_IFD_in_MAKERNOTE in ext/exif/exif.c in PHP before 5.6.37, 7.0.x before 7.0.31, 7.1.x before
    7.1.20, and 7.2.x before 7.2.8 allows remote attackers to cause a denial of service (out-of-bounds read
    and application crash) via a crafted JPEG file. (CVE-2018-14851)

  - An issue was discovered in PHP before 5.6.37, 7.0.x before 7.0.31, 7.1.x before 7.1.20, and 7.2.x before
    7.2.8. An Integer Overflow leads to a heap-based buffer over-read in exif_thumbnail_extract of exif.c.
    (CVE-2018-14883)

According to the versions of the php packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17     and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC     support (uncommon), urldecode() function can be made to     access locations past the allocated memory, due to     erroneously using signed numbers as array     indexes.(CVE-2020-7067)

  - In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15     and 7.4.x below 7.4.3, when using file upload     functionality, if upload progress tracking is enabled,     but session.upload_progress.cleanup is set to 0     (disabled), and the file upload fails, the upload     procedure would try to clean up data that does not     exist and encounter null pointer dereference, which     would likely lead to a crash.(CVE-2020-7062)

  - When using certain mbstring functions to convert     multibyte encodings, in PHP versions 7.2.x below     7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is     possible to supply data that will cause function     mbfl_filt_conv_big5_wchar to read past the allocated     buffer. This may lead to information disclosure or     crash.(CVE-2020-7060)

  - When using fgetss() function to read data with     stripping tags, in PHP versions 7.2.x below 7.2.27,     7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible     to supply data that will cause this function to read     past the allocated buffer. This may lead to information     disclosure or crash.(CVE-2020-7059)

  - University of Washington IMAP Toolkit 2007f on UNIX, as     used in imap_open() in PHP and other products, launches     an rsh command (by means of the imap_rimap function in     c-client/imap4r1.c and the tcp_aopen function in     osdep/unix/tcp_unix.c) without preventing argument     injection, which might allow remote attackers to     execute arbitrary OS commands if the IMAP server name     is untrusted input (e.g., entered by a user of a web     application) and if rsh has been replaced by a program     with different argument semantics. For example, if rsh     is a link to ssh (as seen on Debian and Ubuntu     systems), then the attack can use an IMAP server name     containing a '-oProxyCommand' argument.(CVE-2018-19518)

  - ext/standard/var_unserializer.c in PHP 5.x through     7.1.24 allows attackers to cause a denial of service     (application crash) via an unserialize call for the     com, dotnet, or variant class.(CVE-2018-19396)

  - In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15     and 7.4.x below 7.4.3, when creating PHAR archive using     PharData::buildFromIterator() function, the files are     added with default permissions (0666, or all access)     even if the original files on the filesystem were with     more restrictive permissions. This may result in files     having more lax permissions than intended when such     archive is extracted.(CVE-2020-7063)

  - In PHP versions 7.2.x below 7.2.31, 7.3.x below 7.3.18     and 7.4.x below 7.4.6, when HTTP file uploads are     allowed, supplying overly long filenames or field names     could lead PHP engine to try to allocate oversized     memory storage, hit the memory limit and stop     processing the request, without cleaning up temporary     files created by upload request. This potentially could     lead to accumulation of uncleaned temporary files     exhausting the disk space on the target     server.(CVE-2019-11048)

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

According to the versions of the php packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15     and 7.4.x below 7.4.3, when creating PHAR archive using     PharData::buildFromIterator() function, the files are     added with default permissions (0666, or all access)     even if the original files on the filesystem were with     more restrictive permissions. This may result in files     having more lax permissions than intended when such     archive is extracted.(CVE-2020-7063)

  - In PHP versions 7.2.x below 7.2.31, 7.3.x below 7.3.18     and 7.4.x below 7.4.6, when HTTP file uploads are     allowed, supplying overly long filenames or field names     could lead PHP engine to try to allocate oversized     memory storage, hit the memory limit and stop     processing the request, without cleaning up temporary     files created by upload request. This potentially could     lead to accumulation of uncleaned temporary files     exhausting the disk space on the target     server.(CVE-2019-11048)

  - University of Washington IMAP Toolkit 2007f on UNIX, as     used in imap_open() in PHP and other products, launches     an rsh command (by means of the imap_rimap function in     c-client/imap4r1.c and the tcp_aopen function in     osdep/unix/tcp_unix.c) without preventing argument     injection, which might allow remote attackers to     execute arbitrary OS commands if the IMAP server name     is untrusted input (e.g., entered by a user of a web     application) and if rsh has been replaced by a program     with different argument semantics. For example, if rsh     is a link to ssh (as seen on Debian and Ubuntu     systems), then the attack can use an IMAP server name     containing a '-oProxyCommand' argument.(CVE-2018-19518)

  - ext/standard/var_unserializer.c in PHP 5.x through     7.1.24 allows attackers to cause a denial of service     (application crash) via an unserialize call for the     com, dotnet, or variant class.(CVE-2018-19396)

  - When using certain mbstring functions to convert     multibyte encodings, in PHP versions 7.2.x below     7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is     possible to supply data that will cause function     mbfl_filt_conv_big5_wchar to read past the allocated     buffer. This may lead to information disclosure or     crash.(CVE-2020-7060)

  - When using fgetss() function to read data with     stripping tags, in PHP versions 7.2.x below 7.2.27,     7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible     to supply data that will cause this function to read     past the allocated buffer. This may lead to information     disclosure or crash.(CVE-2020-7059)

  - In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15     and 7.4.x below 7.4.3, when using file upload     functionality, if upload progress tracking is enabled,     but session.upload_progress.cleanup is set to 0     (disabled), and the file upload fails, the upload     procedure would try to clean up data that does not     exist and encounter null pointer dereference, which     would likely lead to a crash.(CVE-2020-7062)

  - In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17     and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC     support (uncommon), urldecode() function can be made to     access locations past the allocated memory, due to     erroneously using signed numbers as array     indexes.(CVE-2020-7067)

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

ID	Name	Product	Family	Severity
406312	Alpine: php7: security update to 7.1.29-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	critical
406312	Alpine: php7: security update to 7.1.29-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	critical
139998	EulerOS Virtualization for ARM 64 3.0.6.0 : php (EulerOS-SA-2020-1895)	Nessus	Huawei Local Security Checks	critical
139151	EulerOS 2.0 SP8 : php (EulerOS-SA-2020-1821)	Nessus	Huawei Local Security Checks	critical

Detections

Analytics

CVE-2018-19396

high

Tenable Plugins

critical

critical

critical

critical