2020-22874 | jsish Jsi_ObjArraySizer integer overflow

By Max On Jul 16, 2021

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6.0	$0-$5k	0.24

A vulnerability was found in jsish up to 3.0.7. It has been classified as critical. Affected is the function Jsi_ObjArraySizer. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-190. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Integer overflow vulnerability in function Jsi_ObjArraySizer in jsish before 3.0.8, allows remote attackers to execute arbitrary code.

The weakness was presented 07/13/2021. The advisory is available at github.com. This vulnerability is traded as CVE-2020-22874 since 08/13/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The successful exploitation requires a authentication. Technical details are known, but there is no available exploit.

Upgrading to version 3.0.8 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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