Vulnerability Details : CVE-2019-16214
Potential exploit
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.
Products affected by CVE-2019-16214
- cpe:2.3:a:libra:libra_core:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-16214
0.26%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-16214
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N |
2.1
|
3.6
|
NIST |
References for CVE-2019-16214
-
https://github.com/libra/libra/commit/7efb0221989f17fdf7f8486730898ed947a1e19e
[language] Restrict character classes allowed in IR · libra/libra@7efb022 · GitHubPatch;Third Party Advisory
-
https://blog.openzeppelin.com/libra-vulnerability-release/
OpenZeppelin Uncovers Vulnerability in Libra’s Move IR Compiler – OpenZeppelin blogThird Party Advisory
-
https://blog.openzeppelin.com/libra-vulnerability-summary/
Libra’s Move IR Compiler Vulnerability: Technical Description – OpenZeppelin blogExploit;Third Party Advisory
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