Espruino up to 1.97 jsvar.c null pointer dereference

Summaryinfo

A vulnerability labeled as problematic has been found in Espruino up to 1.97. Impacted is an unknown function of the file jsvar.c. The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2018-11591. The attack must be initiated from a local position. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Espruino up to 1.97. It has been classified as problematic. Affected is an unknown part of the file jsvar.c. 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. CVE summarizes:

Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.

The bug was discovered 05/19/2018. The weakness was shared 05/31/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-11591 since 05/31/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.98 eliminates this vulnerability.

The entries VDB-118468, VDB-118467, VDB-118466 and VDB-118465 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Espruino

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.44
• 1.45
• 1.46
• 1.47
• 1.48
• 1.49
• 1.50
• 1.51
• 1.52
• 1.53
• 1.54
• 1.55
• 1.56
• 1.57
• 1.58
• 1.59
• 1.60
• 1.61
• 1.62
• 1.63
• 1.64
• 1.65
• 1.66
• 1.67
• 1.68
• 1.69
• 1.70
• 1.71
• 1.72
• 1.73
• 1.74
• 1.75
• 1.76
• 1.77
• 1.78
• 1.79
• 1.80
• 1.81
• 1.82
• 1.83
• 1.84
• 1.85
• 1.86
• 1.87
• 1.88
• 1.89
• 1.90
• 1.91
• 1.92
• 1.93
• 1.94
• 1.95
• 1.96
• 1.97

License

• open-source

Website

• Product: https://github.com/espruino/Espruino/

CPE 2.3info

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