LibRaw up to 0.18.8 dcraw_common.cpp nikon_coolscan_load_raw null pointer dereference

Summaryinfo

A vulnerability identified as problematic has been detected in LibRaw up to 0.18.8. Affected is the function nikon_coolscan_load_raw of the file internal/dcraw_common.cpp. Performing a manipulation results in null pointer dereference. This vulnerability is identified as CVE-2018-5812. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in LibRaw up to 0.18.8 (Image Processing Software). This affects the function nikon_coolscan_load_raw of the file internal/dcraw_common.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

An error within the "nikon_coolscan_load_raw()" function (internal/dcraw_common.cpp) in LibRaw versions prior to 0.18.9 can be exploited to trigger a NULL pointer dereference.

The bug was discovered 05/30/2018. The weakness was released 12/07/2018 (Website). It is possible to read the advisory at usn.ubuntu.com. This vulnerability is uniquely identified as CVE-2018-5812 since 01/19/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 vulnerability was handled as a non-public zero-day exploit for at least 71 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111630 (openSUSE Security Update : libraw (openSUSE-2018-849)), 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 197322 (Ubuntu Security Notification for Libraw Vulnerabilities (USN-3838-1)).

Upgrading to version 0.18.9 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111630) and Secunia (SA81800†). Entries connected to this vulnerability are available at VDB-127726, VDB-127729, VDB-127730 and VDB-127732. 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
• 0.18.8

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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