CVE-2020-35918 : An issue was discovered in the branca crate before 0.10.0 for Rust. Decoding tokens (with invalid base62 data) can panic

An issue was discovered in the branca crate before 0.10.0 for Rust. Decoding tokens (with invalid base62 data) can panic.

Published 2020-12-31 09:15:16

Updated 2022-09-02 15:44:04

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-35918

EPSS FAQ

0.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 35 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-35918

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

References for CVE-2020-35918

https://github.com/return/branca/issues/24

Security issue: Panic on invalid base62-encoded tokens · Issue #24 · return/branca · GitHub
Exploit;Issue Tracking;Patch;Third Party Advisory
https://rustsec.org/advisories/RUSTSEC-2020-0075.html

RUSTSEC-2020-0075: branca: Unexpected panic when decoding tokens › RustSec Advisory Database
Exploit;Third Party Advisory
https://github.com/tuupola/branca-spec/issues/22

Base62 is actually Base61 · Issue #22 · tuupola/branca-spec · GitHub
Third Party Advisory

Products affected by CVE-2020-35918

Hakobaito » Branca » For Rust
Versions before (<) 0.10.0
cpe:2.3:a:hakobaito:branca:*:*:*:*:*:rust:*:*
Matching versions