CVE-2020-10595 Memory corruption in n/a
A buffer overflow in pam-krb5 allows remote code execution when supplemental Kerberos prompting is enabled, requiring specific non-default configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-10595?
CVE-2020-10595 is a critical memory corruption vulnerability in Debian Debian Linux, published on 31 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
pam-krb5 before 4.9 has a buffer overflow that might cause remote code execution in situations involving supplemental prompting by a Kerberos library. It may overflow a buffer provided by the underlying Kerberos library by a single '\0' byte if an attacker responds to a prompt with an answer of a carefully chosen length. The effect may range from heap corruption to stack corruption depending on the structure of the underlying Kerberos library, with unknown effects but possibly including code execution. This code path is not used for normal authentication, but only when the Kerberos library does supplemental prompting, such as with PKINIT or when using the non-standard no_prompt PAM configuration option.
Weakness: CWE-120
Which versions are affected by CVE-2020-10595?
It affects 2 products.
Products include Debian Debian Linux, Pam-Krb5 Project Pam-Krb5.
How do I fix CVE-2020-10595?
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-2020-10595 being exploited?
There is no known exploitation of CVE-2020-10595 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2020-10595, DLA-2166-1, DSA-4648-1, GHSA-63wp-w3mg-whpq, UBUNTU-CVE-2020-10595, USN-4314-1.