CVE-2020-12823: Buffer Overflow
First published: Tue May 12 2020(Updated: )
OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenConnect | =8.09 | |
| Fedora | =30 | |
| Fedora | =31 | |
| Fedora | =32 | |
| Debian | =8.0 | |
| SUSE Linux | =15.1 | |
| SUSE Linux | =15.2 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00056.html
- https://bugs.gentoo.org/721570
- https://gitlab.com/openconnect/openconnect/-/merge_requests/108
- https://lists.debian.org/debian-lts-announce/2020/05/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYSXLXAPXD2T73T6JMHI5G2WP7KHAGMN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BEVTIH5UFX35CC7MVSYBGRM3D66ACFD5/
- https://security.gentoo.org/glsa/202006-15
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYSXLXAPXD2T73T6JMHI5G2WP7KHAGMN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEVTIH5UFX35CC7MVSYBGRM3D66ACFD5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/
Frequently Asked Questions
What is the severity of CVE-2020-12823?
CVE-2020-12823 has a severity rating that indicates it can cause denial of service through application crashes.
How do I fix CVE-2020-12823?
To fix CVE-2020-12823, you should update OpenConnect to version 8.10 or later as recommended by security advisories.
What systems are affected by CVE-2020-12823?
CVE-2020-12823 affects OpenConnect version 8.09 and specific Fedora, Debian, and openSUSE releases.
What type of vulnerability is CVE-2020-12823?
CVE-2020-12823 is a buffer overflow vulnerability that may lead to application crashes.
Can CVE-2020-12823 affect my network security?
Yes, CVE-2020-12823 can impact network security by causing applications to crash, leading to potential denial of service.
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- canonical/openconnect
- version/openconnect/8.09
- vendor/fedoraproject
- canonical/fedora
- version/fedora/30
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- version/debian/8.0
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- canonical/suse linux
- version/suse linux/15.1
- version/suse linux/15.2