CVE-2019-19333
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
72.5%
In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type “bits”. An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| cesnet | libyang | 0.11 | cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.11 | cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:* |
| cesnet | libyang | 0.12 | cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.12 | cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:* |
| cesnet | libyang | 0.13 | cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.13 | cpe:2.3:a:cesnet:libyang:0.13:r2:*:*:*:*:*:* |
| cesnet | libyang | 0.14 | cpe:2.3:a:cesnet:libyang:0.14:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.15 | cpe:2.3:a:cesnet:libyang:0.15:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.16 | cpe:2.3:a:cesnet:libyang:0.16:r1:*:*:*:*:*:* |
| cesnet | libyang | 0.16 | cpe:2.3:a:cesnet:libyang:0.16:r2:*:*:*:*:*:* |
References
access.redhat.com/errata/RHSA-2019:4360
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19333
github.com/CESNET/libyang/commit/f6d684ade99dd37b21babaa8a856f64faa1e2e0d
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL/
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
72.5%