Vulnerability Details : CVE-2019-7702
Potential exploit
A NULL pointer dereference was discovered in wasm::SExpressionWasmBuilder::parseExpression in wasm-s-parser.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-7702
- cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-7702
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-7702
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2019-7702
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-7702
-
https://github.com/WebAssembly/binaryen/issues/1867
Null pointer Deference in wasm::SExpressionWasmBuilder::parseExpression(wasm::Element&) in wasm-s-parser.cpp · Issue #1867 · WebAssembly/binaryen · GitHubExploit;Third Party Advisory
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