PHP up to 7.1.26/7.2.15/7.3.2 EXIF exif_process_IFD_in_TIFF memory corruption

Summaryinfo

A vulnerability was found in PHP up to 7.1.26/7.2.15/7.3.2. It has been classified as critical. This affects the function exif_process_IFD_in_TIFF of the component EXIF. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2019-9641. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as very critical has been found in PHP up to 7.1.26/7.2.15/7.3.2 (Programming Language Software). This affects the function exif_process_IFD_in_TIFF of the component EXIF. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. 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_TIFF.

The bug was discovered 03/12/2019. The weakness was published 03/09/2019 (Website). It is possible to read the advisory at debian.org. This vulnerability is uniquely identified as CVE-2019-9641 since 03/08/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/31/2023).

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 107156†). Similar entries are available at VDB-131077, VDB-131109, VDB-131110 and VDB-131111. Be aware that VulDB is the high quality source for vulnerability data.

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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Be aware that VulDB is the high quality source for vulnerability data.

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