CVE-2019-19334: Buffer Overflow
First published: Wed Dec 04 2019(Updated: )
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 "identityref". 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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cesnet Libyang | =0.11-r1 | |
| Cesnet Libyang | =0.11-r2 | |
| Cesnet Libyang | =0.12-r1 | |
| Cesnet Libyang | =0.12-r2 | |
| Cesnet Libyang | =0.13-r1 | |
| Cesnet Libyang | =0.13-r2 | |
| Cesnet Libyang | =0.14-r1 | |
| Cesnet Libyang | =0.15-r1 | |
| Cesnet Libyang | =0.16-r1 | |
| Cesnet Libyang | =0.16-r2 | |
| Cesnet Libyang | =0.16-r3 | |
| Cesnet Libyang | =1.0-r1 | |
| Cesnet Libyang | =1.0-r2 | |
| Cesnet Libyang | =1.0-r3 | |
| Cesnet Libyang | =1.0-r4 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =31 | |
| redhat/libyang | <1.0 | 1.0 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2019:4360
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19334
- https://github.com/CESNET/libyang/commit/6980afae2ff9fcd6d67508b0a3f694d75fd059d6
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1780494
- https://access.redhat.com/security/cve/cve-2019-19334
- https://bugzilla.redhat.com/show_bug.cgi?id=1779576
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL/
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- vendor/cesnet
- canonical/cesnet libyang
- version/cesnet libyang/0.11-r1
- version/cesnet libyang/0.11-r2
- version/cesnet libyang/0.12-r1
- version/cesnet libyang/0.12-r2
- version/cesnet libyang/0.13-r1
- version/cesnet libyang/0.13-r2
- version/cesnet libyang/0.14-r1
- version/cesnet libyang/0.15-r1
- version/cesnet libyang/0.16-r1
- version/cesnet libyang/0.16-r2
- version/cesnet libyang/0.16-r3
- version/cesnet libyang/1.0-r1
- version/cesnet libyang/1.0-r2
- version/cesnet libyang/1.0-r3
- version/cesnet libyang/1.0-r4
- vendor/redhat
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- version/redhat enterprise linux/8.0
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- version/fedoraproject fedora/31
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