#VU46868 NULL pointer dereference in DBI - CVE-2019-20919
Published: September 17, 2020 / Updated: September 22, 2020
Vulnerability identifier: #VU46868
Vulnerability risk: 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-2019-20919
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
DBI
DBI
Software vendor:
TIMB
TIMB
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 the DBI module before 1.643 for Perl. The hv_fetch() documentation requires checking for NULL and the code does that. But, shortly thereafter, it calls SvOK(profile), causing a NULL pointer dereference. A remote attacker can perform a denial of service (DoS) attack.
Remediation
Update to version 1.643.