Out-of-bounds read in Aspell - CVE-2019-20433

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Main Vulnerability Database Vulnerabilities #VU30425

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: 6.9 [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]
CVE-ID: CVE-2019-20433
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Aspell
openEuler
aspell
aspell-help
aspell-devel
aspell-debugsource
aspell-debuginfo

How to mitigate CVE-2019-20433

Update to version 0.60.8.

Aspell - update to 0.60.8
aspell - update to 0.60.6.1-29
aspell-help - update to 0.60.6.1-29
aspell-devel - update to 0.60.6.1-29
aspell-debugsource - update to 0.60.6.1-29
aspell-debuginfo - update to 0.60.6.1-29

External References

Related Security Bulletins