uriparser up to 0.8.x UriCommon.c uriResetUri null pointer dereference

Summaryinfo

A vulnerability identified as problematic has been detected in uriparser up to 0.8.x. This affects the function uriResetUri of the file UriCommon.c. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2018-19200. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in uriparser up to 0.8.x. Affected by this vulnerability is the function uriResetUri of the file UriCommon.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered in uriparser before 0.9.0. UriCommon.c allows attempted operations on NULL input via a uriResetUri* function.

The bug was discovered 10/26/2018. The weakness was disclosed 11/12/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2018-19200 since 11/12/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 17 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119053 (Debian DLA-1581-1 : uriparser security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172070 (OpenSUSE Security Update for uriparser (openSUSE-SU-2019:0165-1)).

Upgrading to version 0.9.0 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (119053). The entries VDB-126665, VDB-126666 and VDB-129810 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• uriparser

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8

License

• open-source

Website

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

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CPE 2.2info

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

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