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hackeroneBigshaqH1:852103
HistoryApr 17, 2020 - 9:39 a.m.

Internet Bug Bounty: Out-of-Bound Read in urldecode() [CVE-2020-7067]

2020-04-1709:39:51
bigshaq
hackerone.com
25

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.006 Low

EPSS

Percentile

76.4%

Hi,
Please see: https://bugs.php.net/bug.php?id=79465&edit=2

CVE is assigned (CVE-2020-7067)
Fixed in 7.4.5 Release: https://www.php.net/ChangeLog-7.php#7.4.5

Impact

A remote attacker might leak values from the memory by crafting a malicious url-encoded string into PHP’s urldecode()

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.006 Low

EPSS

Percentile

76.4%