PT-2018-3450 · Gnu+5 · Gnutls+5

Adi Shamir + 2 · Published 2018-08-11 · Updated 2023-02-13 · CVE-2018-10844

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions: GnuTLS (affected versions not specified)

Description: The issue is related to the GnuTLS implementation of HMAC-SHA-256, which is vulnerable to a Lucky thirteen style attack. Remote attackers could exploit this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets. The vulnerability is associated with errors in the implementation of the cryptographic algorithm, allowing an attacker to exploit it and perform attacks such as plaintext-recovery attacks using specially crafted packets.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

CWE-385

Related Identifiers

ALT-PU-2020-1134

ALT-PU-2020-1224

BDU:2020-01598

CESA-2018_3050

CVE-2018-10844

DLA-1560-1

MGASA-2018-0435

OPENSUSE-SU-2018_2854-1

OPENSUSE-SU-2018_2958-1

RHSA-2018:3050

RHSA-2018_3050

SUSE-SU-2018:2825-1

SUSE-SU-2018:2825-2

SUSE-SU-2018:2842-1

SUSE-SU-2018:2930-1

USN-3999-1

Affected Products

Alt Linux

Centos

Gnutls

Red Hat

Suse

Ubuntu

References · 82

• https://bdu.fstec.ru/vul/2020-00252 · Security Note
• https://ubuntu.com/security/CVE-2018-10845 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2825-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-10844 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844 · Patch
• https://errata.altlinux.org/ALT-PU-2020-1224 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10845 · Security Note
• https://bdu.fstec.ru/vul/2020-01599 · Security Note
• https://usn.ubuntu.com/3999-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2018:3050 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0435 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10844 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-10844 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2020-1134 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05201 · Security Note