CVE-2020-10769 Denial of service in Kernel

What is CVE-2020-10769?

CVE-2020-10769 is a medium-severity denial of service vulnerability in Opensuse Leap, published on 26 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of service.

Weakness: CWE-125

Which versions are affected by CVE-2020-10769?

It affects 2 products.

Products include Opensuse Leap, Redhat Enterprise Linux.

How do I fix CVE-2020-10769?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-10769 being exploited?

There is no known exploitation of CVE-2020-10769 in the wild and no public exploit code.

Other vulnerabilities in Opensuse Leap

• CVE-2015-4902 Oracle Java SE Integrity Check Exploited Medium 5.3
• CVE-2017-14804 package builds could use directory traversal to write outside of target area Critical 9.9
• CVE-2019-20787 Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size. Critical 9.8
• CVE-2019-8341 Code injection in n/a Critical 9.8
• CVE-2019-6438 Other in n/a Critical 9.8

All Opensuse Leap vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-10769, GHSA-ccvh-qcqm-vp82, UBUNTU-CVE-2020-10769.