Out-of-bounds read in Aspell - CVE-2019-20433
Published: January 27, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30425
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-20433
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
Aspell
Aspell
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to buffer over-read for a string ending with a single '' byte, if the encoding is set to ucs-2 or ucs-4 outside of the application, as demonstrated by the ASPELL_CONF environment variable. A remote attacker can perform a denial of service attack.
How to mitigate CVE-2019-20433
Update to version 0.60.8.