Gentoo update for GnuTLS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-11501
CWE-ID CWE-330
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Gentoo Linux
Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use of insufficiently random values

EUVDB-ID: #VU26487

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11501

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: No

Description

The vulnerability allows a remote attacker to decrypt data.

The vulnerability exists in GnuTLS DTLS protocol implementation due to an error in code that caused DTLS client not to contribute any randomness to the DTLS negotiation. As a result a remote attacker with ability to intercept network traffic can decrypt data passed via TLS 1.3 connection and gain access to sensitive information.

Mitigation

Update the affected packages.
net-libs/gnutls to version: 3.6.13

Vulnerable software versions

Gentoo Linux: All versions

CPE2.3 External links

https://security.gentoo.org/glsa/202004-06


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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