Espruino
CVE-2018-20201
HIGH
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file.
AnalysisAI
There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file. Affected products include: Pur3 Espruino.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.
Espruino 2v11 release was discovered to contain a stack buffer overflow via src/jsvar.c in jsvGetNextSibling. Rated high
Espruino 2v11.251 was discovered to contain a stack buffer overflow via src/jsvar.c in jsvNewFromString. Rated high seve
Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Escalation of Pri
Espruino 2v20 (commit fcc9ba4) was discovered to contain an Out-of-bounds Read via jsvStringIteratorPrintfCallback at sr
Espruino 2v20 (commit fcc9ba4) was discovered to contain a Stack Overflow via the jspeFactorFunctionCall at src/jsparse.
Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Discl
Espruino before 1.99 allows attackers to cause a denial of service (application crash) and potential Information Disclos
Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file vi
Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file vi
Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file vi
Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file vi
Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file vi
Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today