CVE-2020-35883
Path traversal in mozwire
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
CVE-2020-35883- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - CVSS 2.0
- 6.4 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:P - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
CVE-2020-35883- Updated
- 2026-11-02
EUVDEUVD-2021-1562 No score
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
EUVD-2021-1562- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4vhw-4rw7-jfpv
Path traversal in mozwire
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
GHSA-4vhw-4rw7-jfpv- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
CVE-2020-35883- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-4vhw-4rw7-jfpv
Path traversal in mozwire
An issue was discovered in the mozwire crate through 2020-08-18 for Rust. A ../ directory-traversal situation allows overwriting local files that have .conf at the end of the filename.
- Record
GHSA-4vhw-4rw7-jfpv- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVRUSTSEC-2020-0030
Missing sanitization in mozwire allows local file overwrite of files ending in .conf
The client software downloaded a list of servers from mozilla's servers and created local files named after the hostname field in the json document.
No verification of the content of the string was made, and it could therefore have included '../' leading to path traversal.
This allows an attacker in control of mozilla's servers to overwrite/create local files named .conf.
The flaw was corrected by sanitizing the hostname field.
- Record
RUSTSEC-2020-0030- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-35883 is a critical vulnerability (CVSS 9.1) in Mozwire Project Mozwire, published August 18, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.52%, the 74th percentile. Fixed in mozwire 0.5.0.