CVE-2024-21524 json
node-stringbuilder vulnerable to Out-of-bounds Read
published 2y ago modified 4mo ago also GHSA-g533-xq5w-jmf3 , EUVD-2024-2343
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.
Is CVE-2024-21524 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2y ago
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- security.snyk.io https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617 referenced PoC, tagged "exploit" by a source, unverified
- gist.github.com https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P |
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | node-stringbuilder | <=2.2.7 |
no fix listed |
Affected products
- n/a node-stringbuilder
- magiclen node-stringbuilder
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
security.snyk.io
/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
web, exploit, third-party-advisory
-
gist.github.com
/dellalibera/0bb022811224f81d998fa61c3175ee67
web, exploit, third-party-advisory
-
github.com
/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
broken-link
-
nvd.nist.gov
/vuln/detail/CVE-2024-21524
advisory
-
github.com
/magiclen/node-stringbuilder
package
-
github.com
/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
web
Sources
- CVE List CVE-2024-21524
- GitHub Advisory GHSA-g533-xq5w-jmf3
- NVD CVE-2024-21524
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.