openEuler 20.03 LTS SP4 update for gnutls



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2024-0553
CVE-2023-5981
CWE-ID CWE-208
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

gnutls-help
Operating systems & Components / Operating system package or component

gnutls-utils
Operating systems & Components / Operating system package or component

gnutls-debugsource
Operating systems & Components / Operating system package or component

gnutls-devel
Operating systems & Components / Operating system package or component

gnutls-debuginfo
Operating systems & Components / Operating system package or component

gnutls
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU85623

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-0553

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform timing attack.

The vulnerability exists due to the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding. A remote attacker can perform timing sidechannel attack in RSA-PSK key exchange.

Note, the vulnerability exists due to incomplete fox for #VU83316 (CVE-2023-5981).

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP4

gnutls-help: before 3.6.14-14

gnutls-utils: before 3.6.14-14

gnutls-debugsource: before 3.6.14-14

gnutls-devel: before 3.6.14-14

gnutls-debuginfo: before 3.6.14-14

gnutls: before 3.6.14-14

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2024-1092


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.

2) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU83316

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-5981

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform timing attack.

The vulnerability exists due to the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding. A remote attacker can perform timing sidechannel attack in RSA-PSK key exchange.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP4

gnutls-help: before 3.6.14-14

gnutls-utils: before 3.6.14-14

gnutls-debugsource: before 3.6.14-14

gnutls-devel: before 3.6.14-14

gnutls-debuginfo: before 3.6.14-14

gnutls: before 3.6.14-14

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2024-1092


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.



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