ASA-202004-5 log original external raw

Arch Linux Security Advisory ASA-202004-5 ========================================= Severity: Medium Date : 2020-04-01 CVE-ID : CVE-2020-10595 Package : pam-krb5 Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1119 Summary ======= The package pam-krb5 before version 4.9-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 4.9-1. # pacman -Syu "pam-krb5>=4.9-1" The problem has been fixed upstream in version 4.9. Workaround ========== None. 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. Impact ====== A remote attacker is able to execute arbitrary code on the affected host. References ========== https://mailman.mit.edu/pipermail/kerberos/2020-March/022444.html https://www.openwall.com/lists/oss-security/2020/03/31/1 https://www.eyrie.org/~eagle/software/pam-krb5/security/2020-03-30.html https://github.com/rra/pam-krb5/commit/b57c2ee992ae2309e7866e89caef2a4870722435 https://security.archlinux.org/CVE-2020-10595