LibTIFF up to 4.0.10 tif_aux.c _TIFFCheckMalloc/_TIFFCheckRealloc integer overflow

Summaryinfo

A vulnerability was found in LibTIFF up to 4.0.10. It has been declared as critical. The affected element is the function _TIFFCheckMalloc/_TIFFCheckRealloc of the file tif_aux.c. The manipulation results in integer overflow. This vulnerability is reported as CVE-2019-14973. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in LibTIFF up to 4.0.10 (Image Processing Software). It has been classified as critical. Affected is the function _TIFFCheckMalloc/_TIFFCheckRealloc of the file tif_aux.c. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.

The weakness was disclosed 08/14/2019 (Website). The advisory is shared for download at gitlab.com. This vulnerability is traded as CVE-2019-14973 since 08/12/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236703 (Alibaba Cloud Linux 3 : 0105: libtiff (ALINUX3-SA-2022:0105)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236703). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Image Processing Software

Name

• LibTIFF

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10

License

• open-source

Website

• Product: http://www.libtiff.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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