NULL pointer dereference in Balsa - CVE-2020-16118
Published: July 29, 2020 / Updated: August 5, 2020
Vulnerability identifier: #VU34009
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-16118
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Balsa
Balsa
Software vendor:
Gnome Development Team
Gnome Development Team
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imap_mbox_connect in libbalsa/imap/imap-handle.c. A remote attacker can perform a denial of service (DoS) attack.
Remediation
Update to version 2.6.0.