CVE-2020-12823 Memory corruption in n/a
A buffer overflow in OpenConnect allows attackers to cause a denial of service via crafted certificate data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12823?
CVE-2020-12823 is a critical memory corruption vulnerability in Debian Debian Linux, published on 12 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-120
Which versions are affected by CVE-2020-12823?
It affects 4 products.
Linux distribution packages (6)
openconnect SUSE:Linux Enterprise Workstation Extension 12 SP4 | All versions | 7.08-3.12.1 |
openconnect SUSE:Linux Enterprise Workstation Extension 12 SP5 | All versions | 7.08-3.12.1 |
openconnect SUSE:Linux Enterprise Workstation Extension 15 SP1 | All versions | 7.08-6.9.1 |
openconnect SUSE:Linux Enterprise Workstation Extension 15 SP2 | All versions | 7.08-6.9.1 |
openconnect openSUSE:Leap 15.1 | All versions | 7.08-lp151.6.9.1 |
openconnect openSUSE:Leap 15.2 | All versions | 7.08-lp152.9.4.2 |
Products include Debian Debian Linux, Fedoraproject Fedora, Infradead Openconnect, Opensuse Leap.
How do I fix CVE-2020-12823?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-12823 being exploited?
There is no known exploitation of CVE-2020-12823 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2020-12823, DLA-2212-1, GHSA-f93c-rq5c-gvpf, SUSE-SU-2020:1807-1, SUSE-SU-2020:1930-1, UBUNTU-CVE-2020-12823 and 2 more.