openEuler update for aspell

1) Out-of-bounds read

EUVDB-ID: #VU30425

Risk: Medium

CVSSv4.0: 4.6 [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 - Out-of-bounds read

Exploit availability: No

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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

aspell-debuginfo: before 0.60.6.1-29

aspell-debugsource: before 0.60.6.1-29

aspell-devel: before 0.60.6.1-29

aspell-help: before 0.60.6.1-29

aspell: before 0.60.6.1-29

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP2:*:*:*:*:*:*
• cpe:2.3:a:openeuler:aspell-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:aspell-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:aspell-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:aspell-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:aspell:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1388

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.