CVE-2019-20394 is a double-free vulnerability in the yyparse() function of cesnet libyang before v1.0-r3, specifically when a type statement is used within a notification statement. This flaw, rated 8.8 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), allows an unauthenticated attacker to potentially cause a crash or achieve remote code execution if an application using libyang parses a malicious YANG file. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
0.11CPE matchmatch criteria | cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:* | ||
0.11CPE matchmatch criteria | cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:* | ||
0.12CPE matchmatch criteria | cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:* | ||
0.12CPE matchmatch criteria | cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:* | ||
0.13CPE matchmatch criteria | cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.