Vulnerability identifier: #VU34866
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
libyang
Universal components / Libraries /
Libraries used by multiple products
Vendor: CESNET
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
A segmentation fault is present in yyparse in libyang before v1.0-r1 due to a malformed pattern statement value during lys_parse_path parsing.
Mitigation
Install update from vendor's website.
Vulnerable software versions
libyang: 0.11 - 0.16
External links
http://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8
http://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1
http://github.com/CESNET/libyang/issues/740
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.