Home
» GitHub Advisories
» GHSA-7cqg-8449-rmfv
Description
A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.
Basic information
Type
reviewed
Severity
medium Advisory on GitHub
Open advisory ↗ Repository advisory
—
Source code
Not specified Published (advisory)
2021-08-25 21:01:27 UTC
Updated
2023-02-03 05:05:56 UTC
GitHub reviewed
2021-07-27 15:21:02 UTC
NVD published
2020-01-22
EPSS Score
Score
Percentile
0.39%
59.51%
CVSS Scores
Base score
Version
Severity
Vector
5.9
3.1
—
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-203
Observable Discrepancy
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
rust
libsecp256k1-rs < 0.3.1
0.3.1
—
cvelogic
Threat Intelligence