openEuler 22.03 LTS SP2 update for gnutls

1) Input validation error

EUVDB-ID: #VU87672

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-28835

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when parsing the cert_list_size parameter in the gnutls_x509_trust_list_verify_crt2() function in certtool. A remote attacker can pass specially crafted PEM encoded certificate chain that contains more than 16 certificates to the certtool and crash it.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

gnutls-help: before 3.7.2-14

gnutls-utils: before 3.7.2-14

gnutls-debugsource: before 3.7.2-14

gnutls-debuginfo: before 3.7.2-14

gnutls-devel: before 3.7.2-14

gnutls: before 3.7.2-14

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP2:*:*:*:*:*:*
• cpe:2.3:a:openeuler:gnutls-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnutls-utils:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnutls-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnutls-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnutls-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnutls:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2024-1507

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.