Out-of-bounds Read Affecting php53 package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
20.48% (98th percentile)

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  • Snyk IDSNYK-RHEL10-PHP53-22218180
  • published5 Nov 2026
  • disclosed14 May 2015

Introduced: 14 May 2015

CVE-2015-4021  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 php53.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php53 package and not the php53 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

The phar_parse_tarfile function in ext/phar/tar.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 does not verify that the first character of a filename is different from the \0 character, which allows remote attackers to cause a denial of service (integer underflow and memory corruption) via a crafted entry in a tar archive.

CVSS Base Scores

version 3.1