PHP up to 7.1.26/7.2.15/7.3.2 EXIF exif_process_IFD_in_MAKERNOTE data_len memory corruption

Summaryinfo

A vulnerability has been found in PHP up to 7.1.26/7.2.15/7.3.2 and classified as critical. The affected element is the function exif_process_IFD_in_MAKERNOTE of the component EXIF. This manipulation of the argument data_len as part of Variable causes memory corruption. This vulnerability appears as CVE-2019-9639. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PHP up to 7.1.26/7.2.15/7.3.2 (Programming Language Software). It has been declared as critical. Affected by this vulnerability is the function exif_process_IFD_in_MAKERNOTE of the component EXIF. The manipulation of the argument data_len as part of a Variable leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

An issue was discovered in the EXIF component in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. There is an uninitialized read in exif_process_IFD_in_MAKERNOTE because of mishandling the data_len variable.

The bug was discovered 03/12/2019. The weakness was presented 03/09/2019 (Website). The advisory is shared at debian.org. This vulnerability is known as CVE-2019-9639 since 03/08/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 197405 (Ubuntu Security Notification for Php7.0, Php7.2 Vulnerabilities (USN-3922-1)).

Upgrading to version 7.1.27, 7.2.16 or 7.3.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 108177†). See VDB-131531, VDB-131532, VDB-131534 and VDB-131535 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Programming Language Software

Name

• PHP

Version

• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6
• 7.1.7
• 7.1.8
• 7.1.9
• 7.1.10
• 7.1.11
• 7.1.12
• 7.1.13
• 7.1.14
• 7.1.15
• 7.1.16
• 7.1.17
• 7.1.18
• 7.1.19
• 7.1.20
• 7.1.21
• 7.1.22
• 7.1.23
• 7.1.24
• 7.1.25
• 7.1.26
• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.2.9
• 7.2.10
• 7.2.11
• 7.2.12
• 7.2.13
• 7.2.14
• 7.2.15
• 7.3.0
• 7.3.1
• 7.3.2

License

• open-source

Website

• Product: https://www.php.org/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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