CVE-2015-4021 : 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

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.

Published 2015-06-09 18:59:05

Updated 2019-04-22 17:48:01

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Threat overview for CVE-2015-4021

Top countries where our scanners detected CVE-2015-4021

Top open port discovered on systems with this issue 80

IPs affected by CVE-2015-4021 570,894

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2015-4021!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2015-4021

EPSS FAQ

74.00%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 98 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2015-4021

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial

References for CVE-2015-4021

Products affected by CVE-2015-4021

Redhat » Enterprise Linux » Version: 6.0
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Desktop » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Server » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Workstation » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Hpc Node » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Server Eus » Version: 7.1
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*
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Redhat » Enterprise Linux Hpc Node Eus » Version: 7.1
cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:*
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Apple » Mac Os X
Versions up to, including, (<=) 10.10.4
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
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PHP » PHP
Versions up to, including, (<=) 5.4.40
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.5.0 Update Alpha1
cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Alpha2
cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Alpha4
cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update RC1
cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Alpha6
cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Beta1
cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Beta2
cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Beta3
cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Alpha3
cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Alpha5
cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.0 Update Beta4
cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.5.0 Update RC2
cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.5.5
cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.6
cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.1
cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.3
cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.2
cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.5.4
cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.5.0
cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.0 Update Alpha4
cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.6.0 Update Alpha5
cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.6.0 Update Beta2
cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.6.0 Update Alpha2
cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.0 Update Alpha3
cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.2
cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.7
cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.8
cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.6.0 Update Alpha1
cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.5
cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.6
cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.0 Update Beta1
cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.0 Update Beta3
cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.0 Update Beta4
cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.3
cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.6.4
cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.8
cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.7
cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.11
cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.10
cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.9
cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.12
cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.13
cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.14
cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.18
cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.19
cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.20
cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.21
cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.22
cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.24
cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.5.23
cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*
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PHP » PHP » Version: 5.4.39
cpe:2.3:a:php:php:5.4.39:*:*:*:*:*:*:*
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Vulnerability Details : CVE-2015-4021

Threat overview for CVE-2015-4021

Exploit prediction scoring system (EPSS) score for CVE-2015-4021

CVSS scores for CVE-2015-4021

CWE ids for CVE-2015-4021

References for CVE-2015-4021

Products affected by CVE-2015-4021