LibRaw up to 0.18.7 dcraw_common.cpp identify divide by zero

Summaryinfo

A vulnerability, which was classified as problematic, has been found in LibRaw up to 0.18.7. This affects the function identify of the file internal/dcraw_common.cpp. This manipulation causes divide by zero. This vulnerability appears as CVE-2018-5804. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in LibRaw up to 0.18.7 (Image Processing Software) and classified as problematic. Affected by this vulnerability is the function identify of the file internal/dcraw_common.cpp. The manipulation with an unknown input leads to a divide by zero vulnerability. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero. As an impact it is known to affect availability. The summary by CVE is:

A type confusion error within the "identify()" function (internal/dcraw_common.cpp) in LibRaw versions prior to 0.18.8 can be exploited to trigger a division by zero.

The bug was discovered 03/15/2018. The weakness was presented 12/07/2018 (Website). It is possible to read the advisory at secuniaresearch.flexerasoftware.com. This vulnerability is known as CVE-2018-5804 since 01/19/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 267 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119949 (openSUSE Security Update : libraw (openSUSE-2018-1619)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171983 (OpenSUSE Security Update for libraw (openSUSE-SU-2019:0008-1)).

Upgrading to version 0.18.8 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (119949). See VDB-127727 for similar entry. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Image Processing Software

Name

• LibRaw

Version

• 0.18.0
• 0.18.1
• 0.18.2
• 0.18.3
• 0.18.4
• 0.18.5
• 0.18.6
• 0.18.7

License

• open-source

Website

• Product: https://github.com/LibRaw/LibRaw/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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