openEuler update for libtommath

1) Integer overflow

EUVDB-ID: #VU80405

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-36328

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the mp_grow() function. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

libtommath-devel: before 1.1.0-4

libtommath-debuginfo: before 1.1.0-4

libtommath-help: before 1.1.0-4

libtommath-debugsource: before 1.1.0-4

libtommath: before 1.1.0-4

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:a:openeuler:libtommath-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libtommath-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libtommath-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libtommath-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libtommath:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1625

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.