CVE-2021-29941 json
Out of bounds write in reorder
published 2021-02-24 5 y ago modified 2026-06-17 4 mo ago also CVE-2021-29942 , GHSA-3h87-v52r-p9rg , GHSA-jpwg-6gf5-5vh9 , RUSTSEC-2021-0050 , EUVD-2021-1545
- cvss
- 7.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
An issue was discovered in the reorder crate through 2021-02-24 for Rust. swap_index has an out-of-bounds write if an iterator returns a len() that is too small.
Patch / fix
- crates.io reorder 1.1.0
Exploit prediction
0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- rustsec.org https://rustsec.org/advisories/RUSTSEC-2021-0050.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| OSV | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | reorder | <1.1.0 >=0.0.0-0, <1.1.0 |
1.1.0 |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
rustsec.org
/advisories/RUSTSEC-2021-0050.html
web, exploit, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-29941
advisory
-
github.com
/tiby312/reorder/issues/1
web, report
-
github.com
/tiby312/reorder
package
-
nvd.nist.gov
/vuln/detail/CVE-2021-29942
advisory
-
crates.io
/crates/reorder
package
Sources
- CVE List CVE-2021-29941
- GitHub Advisory GHSA-3h87-v52r-p9rg
- GitHub Advisory GHSA-jpwg-6gf5-5vh9
- NVD CVE-2021-29941
- OSV RUSTSEC-2021-0050
Fencer Vulns 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.