critical
9.8
CWE
119 190
Advisory Published
Updated

CVE-2015-4643: Buffer Overflow

First published: Mon May 16 2016(Updated: )

Integer overflow in the ftp_genlist function in ext/ftp/ftp.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 allows remote FTP servers to execute arbitrary code via a long reply to a LIST command, leading to a heap-based buffer overflow. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-4022.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
PHP<5.4.42
PHP>=5.5.0<5.5.26
PHP>=5.6.0<5.6.10
Debian GNU/Linux=7.0
Debian GNU/Linux=8.0
redhat enterprise Linux desktop=6.0
redhat enterprise Linux desktop=7.0
redhat enterprise Linux server=6.0
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=6.6
redhat enterprise Linux server aus=7.3
redhat enterprise Linux server aus=7.4
redhat enterprise Linux server aus=7.6
redhat enterprise Linux server eus=6.6
redhat enterprise Linux server eus=7.1
redhat enterprise Linux server eus=7.2
redhat enterprise Linux server eus=7.3
redhat enterprise Linux server eus=7.4
redhat enterprise Linux server eus=7.5
redhat enterprise Linux server eus=7.6
redhat enterprise Linux server tus=6.6
redhat enterprise Linux server tus=7.3
redhat enterprise Linux server tus=7.6
redhat enterprise Linux workstation=6.0
redhat enterprise Linux workstation=7.0
Oracle Linux=6
Oracle Linux=7-0

Remedy

http://git.php.net/?p=php-src.git;a=commit;h=0765623d6991b62ffcd93ddb6be8a5203a2fa7e2

Remedy

http://openwall.com/lists/oss-security/2015/06/18/6

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-4643?

    CVE-2015-4643 has been classified as a critical vulnerability due to the potential for remote code execution.

  • How do I fix CVE-2015-4643?

    To fix CVE-2015-4643, update PHP to version 5.4.42 or later, 5.5.26 or later, or 5.6.10 or later.

  • Which PHP versions are affected by CVE-2015-4643?

    CVE-2015-4643 affects PHP versions prior to 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10.

  • What are the potential impacts of CVE-2015-4643?

    The vulnerability can lead to a heap-based buffer overflow, allowing remote FTP servers to execute arbitrary code.

  • Are any Linux distributions affected by CVE-2015-4643?

    Yes, Debian and Red Hat enterprise Linux distributions are among those affected by CVE-2015-4643, depending on the versions used.

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