SB2023011945 - Multiple vulnerabilities in PHP

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Main Vulnerability Database SB2023011945

SB2023011945 - Multiple vulnerabilities in PHP

Published: January 19, 2023 Updated: June 8, 2025

Security Bulletin ID SB2023011945
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 20% Medium 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2010-2531)

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The var_export function in PHP 5.2 before 5.2.14 and 5.3 before 5.3.3 flushes the output buffer to the user when certain fatal errors occur, even if display_errors is off, which allows remote attackers to obtain sensitive information by causing the application to exceed limits for memory, execution time, or recursion.


2) Heap-based buffer overflow (CVE-ID: CVE-2010-3062)

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

The vulnerability exists due to a boundary error in mysqlnd_wireprotocol.c in the Mysqlnd extension in PHP 5.3 through 5.3.2. A remote attacker can use a modified length value to trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Heap-based buffer overflow (CVE-ID: CVE-2010-3063)

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

The vulnerability exists due to a boundary error in The php_mysqlnd_read_error_from_line function in the Mysqlnd extension in PHP 5.3 through 5.3.2 does not properly calculate a buffer length, which. A remote attacker can use crafted inputs that cause a negative length value to be used. to trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


4) Stack-based buffer overflow (CVE-ID: CVE-2010-3064)

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

The vulnerability exists due to a boundary error within the php_mysqlnd_auth_write function in the Mysqlnd extension when processing a long (1) username or (2) database name argument to the (a) mysql_connect or (b) mysqli_connect function. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


5) Integer overflow (CVE-ID: CVE-2010-1866)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.


Remediation

Install update from vendor's website.

References