Denial of Service (DoS) Affecting php package, versions [,5.4.41)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
51.93% (98th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-PHP-2335419
  • published12 Jan 2022
  • disclosed9 Jun 2015
  • creditUnknown

Introduced: 9 Jun 2015

CVE-2015-4021  (opens in a new tab)
CWE-189  (opens in a new tab)

How to fix?

Upgrade php to version 5.4.41 or higher.

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). 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.

References

CVSS Scores

version 3.1