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Misconfiguration
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CVE Vulnerabilities

CVE-2019-20395

Uncontrolled Recursion

Published: Jan 22, 2020 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.5 LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-20395
CWEhttps://cwe.mitre.org/data/definitions/674.html

A stack consumption issue is present in libyang before v1.0-r1 due to the self-referential union type containing leafrefs. Applications that use libyang to parse untrusted input yang files may crash.

Weakness

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Software

NameVendorStart VersionEnd Version
LibyangCesnet0.11-r1 (including)0.11-r1 (including)
LibyangCesnet0.11-r2 (including)0.11-r2 (including)
LibyangCesnet0.12-r1 (including)0.12-r1 (including)
LibyangCesnet0.12-r2 (including)0.12-r2 (including)
LibyangCesnet0.13-r1 (including)0.13-r1 (including)
LibyangCesnet0.13-r2 (including)0.13-r2 (including)
LibyangCesnet0.14-r1 (including)0.14-r1 (including)
LibyangCesnet0.15-r1 (including)0.15-r1 (including)
LibyangCesnet0.16-r1 (including)0.16-r1 (including)
LibyangCesnet0.16-r2 (including)0.16-r2 (including)
LibyangCesnet0.16-r3 (including)0.16-r3 (including)
Red Hat Enterprise Linux 8RedHatlibyang-0:1.0.184-1.el8*
LibyangUbuntueoan*
LibyangUbuntuesm-apps/focal*
LibyangUbuntufocal*
LibyangUbuntugroovy*
LibyangUbuntuhirsute*
LibyangUbuntutrusty*
LibyangUbuntuupstream*
Libyang2Ubuntutrusty*
Libyang2Ubuntuupstream*

Potential Mitigations

References

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