GD up to 7.1.29/7.2.17/7.3.5 gdImageCreateFromXbm input validation

Summaryinfo

A vulnerability was found in GD up to 7.1.29/7.2.17/7.3.5. It has been rated as critical. Impacted is the function gdImageCreateFromXbm. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2019-11038. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in GD up to 7.1.29/7.2.17/7.3.5. This affects the function gdImageCreateFromXbm. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

When using gdImageCreateFromXbm() function of gd extension in versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6, it is possible to supply data that will cause the function to use the value of uninitialized variable. This may lead to disclosing contents of the stack that has been left there by previous code.

The weakness was disclosed 06/19/2019 (Website). It is possible to read the advisory at bugs.php.net. This vulnerability is uniquely identified as CVE-2019-11038 since 04/09/2019. 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 commercial vulnerability scanner Qualys is able to test this issue with plugin 176988 (Debian Security Update for libgd2 (DLA 1817-1)).

Upgrading to version 7.1.30, 7.2.18 or 7.3.6 eliminates this vulnerability.

The entries VDB-136649 and VDB-136648 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• GD

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
• 7.1.27
• 7.1.28
• 7.1.29
• 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
• 7.2.16
• 7.2.17
• 7.3.0
• 7.3.1
• 7.3.2
• 7.3.3
• 7.3.4
• 7.3.5

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