CVE-2015-4643 Integer overflow in n/a

What is CVE-2015-4643?

CVE-2015-4643 is a critical vulnerability in Debian Debian Linux, published on 16 May 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-119

Which versions are affected by CVE-2015-4643?

It affects 9 products.

Products include Debian Debian Linux, Oracle Linux, Php Php, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 3 more.

How do I fix CVE-2015-4643?

Upgrade to a fixed version.

Is CVE-2015-4643 being exploited?

There is no known exploitation of CVE-2015-4643 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-phcc-83hq-g329, UBUNTU-CVE-2015-4643.