SB2019011006 - Multiple vulnerabilities in PHP

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Main Vulnerability Database SB2019011006

SB2019011006 - Multiple vulnerabilities in PHP

Published: January 10, 2019 Updated: January 21, 2019

Security Bulletin ID SB2019011006
CSH Severity
High
Patch available
YES
Number of vulnerabilities 20
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 10% Low 90%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 20 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an incomplete multibyte strings in the $pattern of mb_ regex functions, such as mb_split, mb_ereg. A remote attacker can trigger buffer overflow on mb regex functions - fetch_token and cause the service to crash.

2) Buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to boundary error when using mb regex functions such as mb_ereg and mb_split, with a pattern containing (?i) and a string ending with an incomplete multibyte character. A remote attacker can trigger buffer overflow in multibyte case folding - unicode and cause the service to crash.

3) Infinite loop (CVE-ID: N/A)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to infinite loop in preg_replace_callbac. A remote attacker can trigger infinite loop and cause the service to crash.

4) Segmentation fault (CVE-ID: N/A)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to the function spl_autoload converts class name to lower case and later tries to free this string. A remote attacker can trigger spl_autoload segfault and cause the service to crash.

5) Segmentation fault (CVE-ID: N/A)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to SodiumException segfaults. A remote attacker can trigger segmentation fault and cause the service to crash.

6) Segmentation fault (CVE-ID: N/A)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to segfault when using SoapClient with null options. A remote attacker can trigger segmentation fault and cause the service to crash.

7) Integer underflow (CVE-ID: CVE-2016-10166)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack and potentially compromise vulnerable system.

The vulnerability exists due to integer underflow when decrementing the "u" variable in _gdContributionsAlloc() function in gd_interpolation.c. A remote attacker create a specially crafted image file, trigger memory corruption and crash the affected application or execute arbitrary code on the target system.

8) Out-of-bounds write (CVE-ID: CVE-2019-6977)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary on the target system.

The weakness exists due to out-of-bounds write in imagecolormatch. A remote attacker can write up to 1200 bytes over the boundaries of a buffer allocated in the imagecolormatch function, which then calls gdImageColorMatch() and execute arbitrary code with elevated privileges.

9) Error handling (CVE-ID: N/A)

CWE-ID: CWE-388 - Error Handling

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to the imagecreatefromjpeg function improperly handles errors when passing a corrupt jpeg image. A remote attacker can supply a specially crafted jpeg image and cause the service to crash.


10) NULL pointer dereference (CVE-ID: CVE-2018-19935)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an error in imap_mail if message args is null. A remote attacker can trigger NULL pointer dereference in imap_mail and cause the service to crash.


11) NULL pointer dereference (CVE-ID: CVE-2018-19395)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to `serialize` will try to get all properties of the class by `zend_get_properties_for` when trying to `serialize` a class. A remote attacker can make `com` and `com_safearray_proxy` return NULL in `com_properties_get` so it will crash on `zend_array_count` and cause serializing or unserializing COM objects to crash.


12) Heap-based buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an incomplete multibyte strings in $pattern in mb regex functions such as mb_ereg, mb_split. A remote attacker can trigger heap-based buffer overflow in mb regex functions - compile_string_node and cause the service to crash.

13) Heap-based buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an incomplete multibyte char at end of $pattern in mb_split and mb_ereg. A remote attacker can trigger heap-based buffer overflow in multibyte match_at and cause the service to crash.

14) Heap-based buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in expand_case_fold_string the len field is calculated off enclen, and is then used in onig_node_new_str which is passed to xmemcpy later down the line due to incorrect length in expand_case_fold_string. A remote attacker can trigger heap-based buffer overflow and cause the service to crash.

15) Buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to buffer overflow in fetch_token when using enclen on an incomplete multibyte character. A remote attacker 
can make a pointer return after the end of the buffer and cause the service to crash.

16) Heap-based buffer overflow (CVE-ID: CVE-2019-9023)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to heap-based buffer overflow in utf32be_mbc_to_code. A remote attacker can pass unterminated multibyte to the regex match, trigger memory corruption and cause the service to crash.

17) Assertion failure (CVE-ID: N/A)

CWE-ID: CWE-617 - Reachable Assertion

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to CFG assertion failure on multiple finalizing switch frees in one block. A remote attacker can supply a specially crafted input and cause the service to crash.


18) Heap-based buffer overflow (CVE-ID: CVE-2019-9021)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to heap-based buffer overflow in phar_detect_phar_fname_ext. A remote attacker can supply a specially crafted input, trigger memory corruption and cause the service to crash.


19) Heap out-of-bounds read (CVE-ID: CVE-2019-9020)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to heap out-of-bounds read when php is compiled with address sanitizer and USE_ZEND_ALLOC=0 is set. A remote attacker can supply a specially crafted input to the function xmlrpc_decode() , trigger heap buffer over-read and cause the service to crash.


20) Out-of-bounds read (CVE-ID: CVE-2019-9024)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to out-of-bounds read during a second base64 implementation in ext/xmlrpc/libxmlrpc/base64.c in the PHP code. A remote attacker can supply a bad base64 input, trigger buffer over-read and cause the service to crash.

Remediation

Install update from vendor's website.

References