Description

The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.

Remediation

References

CVE-2015-6835

Related Vulnerabilities

Atlassian Confluence Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Vulnerability (CVE-2019-3398)

PHP Out-of-bounds Read Vulnerability (CVE-2017-11147)

WordPress Plugin Recipe Card Blocks for Gutenberg & Elementor Cross-Site Scripting (2.8.0)

PHP Observable Discrepancy Vulnerability (CVE-2024-2408)

Contao Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2018-5478)

Severity

Critical

Classification

CVE-2015-6835 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Tags

Missing Update Known Vulnerabilities