CVE-2020-36443 json
Use of Uninitialized Resource in libp2p-deflate
published 2020-01-24 6 y ago modified 2026-06-17 4 mo ago also GHSA-gvcp-948f-8f2p , RUSTSEC-2020-0123 , EUVD-2021-1730
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
An issue was discovered in the libp2p-deflate crate before 0.27.1 for Rust. An uninitialized buffer is passed to AsyncRead::poll_read(), which is a user-provided trait function.
Patch / fix
- crates.io libp2p-deflate 0.27.1
- libp2p libp2p-deflate 0.27.1
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | libp2p-deflate | <0.27.1 >=0.0.0-0, <0.27.1 |
0.27.1 |
Classification
- Weakness
-
- CWE-908 Use of Uninitialized Resource
References
-
rustsec.org
/advisories/RUSTSEC-2020-0123.html
web, third-party-advisory, advisory
-
raw.githubusercontent.com
/rustsec/advisory-db/main/crates/libp2p-deflate/RUSTSEC-2020-0123.md
third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-36443
advisory
-
github.com
/libp2p/rust-libp2p
package
-
crates.io
/crates/libp2p-deflate
package
-
github.com
/libp2p/rust-libp2p/issues/1932
report
Sources
- CVE List CVE-2020-36443
- GitHub Advisory GHSA-gvcp-948f-8f2p
- NVD CVE-2020-36443
- OSV RUSTSEC-2020-0123
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.