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Vulnerability CVE-2019-16214
Published: 2019-09-11
Description: |
Libra Core before 2019-09-03 has an erroneous regular expression for inline comments, which makes it easier for attackers to interfere with code auditing by using a nonstandard line-break character for a comment. For example, a Move module author can enter the // sequence (which introduces a single-line comment), followed by very brief comment text, the \r character, and code that has security-critical functionality. In many popular environments, this code is displayed on a separate line, and thus a reader may infer that the code is executed. However, the code is NOT executed, because language/compiler/ir_to_bytecode/src/parser.rs allows the comment to continue after the \r character. |
Type:
CWE-20 (Improper Input Validation)
CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
3.5/10 |
2.9/10 |
6.8/10 |
Exploit range |
Attack complexity |
Authentication |
Remote |
Medium |
Single time |
Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
None |
References: |
https://blog.openzeppelin.com/libra-vulnerability-release/
https://blog.openzeppelin.com/libra-vulnerability-summary/
https://github.com/libra/libra/commit/7efb0221989f17fdf7f8486730898ed947a1e19e
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