Vulnerability Details : CVE-2021-33797
Buffer-overflow in jsdtoa.c in Artifex MuJS in versions 1.0.1 to 1.1.1. An integer overflow happens when js_strtod() reads in floating point exponent, which leads to a buffer overflow in the pointer *d.
Vulnerability category: Overflow
Products affected by CVE-2021-33797
- cpe:2.3:a:artifex:mujs:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-33797
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 20 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-33797
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-02-06 |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-33797
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: patrick@puiterwijk.org (Secondary)
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-33797
-
https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550
Issue #148: Check for overflow when reading floating point exponent. · ccxvii/mujs@833b6f1 · GitHubPatch
-
https://github.com/ccxvii/mujs/issues/148
global-buffer-overflow in jsdtoa.c:729. (The issue exists in all versions) · Issue #148 · ccxvii/mujs · GitHubIssue Tracking;Third Party Advisory
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