RUSTSEC-2019-0027
Flaw in Scalar::check_overflow allows side-channel timing attack
- Reported
- Issued
- Package
- libsecp256k1 (crates.io)
- Type
- Vulnerability
- Categories
- Keywords
- #crypto #sidechannel
- Aliases
- CVSS Score
- 7.5 HIGH
- CVSS Details
-
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Patched
-
>=0.3.1
- Affected Functions
- Version
libsecp256k1::Scalar::check_overflow
-
<0.3.1
Description
Versions of libsecp256k1
prior to 0.3.1
did not execute
Scalar::check_overflow in constant time.
This allows an attacker to potentially leak information via a timing attack.
The flaw was corrected by modifying Scalar::check_overflow to execute in constant time.
Advisory available under CC0-1.0 license.