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ChamalH1:516237

HistoryMar 27, 2019 - 3:18 a.m.

Internet Bug Bounty: Uninitialized read in exif_process_IFD_in_MAKERNOTE

2019-03-2703:18:50

chamal

hackerone.com

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

0.002 Low

EPSS

Percentile

57.2%

JSON

This bug is present in exif_process_IFD_in_MAKERNOTE method of ext/exif/exif.c file.

Detailed description and steps to reproduce for this bug is present in bug report submitted to php.net.
Bug Report : https://bugs.php.net/bug.php?id=77563
PHP version : 7.1.26
CVE-ID : 2019-9638

Impact

Uninitialized data may leak data from memory.

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

0.002 Low

EPSS

Percentile

57.2%

JSON

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