Exiv2 0.27-RC3 tiffimage_int.cpp findPrimaryGroups memory corruption

Summaryinfo

A vulnerability described as critical has been identified in Exiv2 0.27-RC3. This affects the function Exiv2::Internal::TiffParserWorker::findPrimaryGroups of the file tiffimage_int.cpp. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2018-20097. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Exiv2 0.27-RC3 (Image Processing Software). It has been rated as critical. Affected by this issue is the function Exiv2::Internal::TiffParserWorker::findPrimaryGroups of the file tiffimage_int.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.

The bug was discovered 12/10/2018. The weakness was released 12/12/2018 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2018-20097 since 12/12/2018. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176682 (Debian Security Update for exiv2 (DLA 1691-1)).

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

Entries connected to this vulnerability are available at VDB-126567, VDB-126568, VDB-127103 and VDB-127915. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Image Processing Software

Name

• Exiv2

Version

• 0.27-RC3

License

• free

Website

• Product: https://github.com/Exiv2/exiv2/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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