Home

CVE-2021-20305

Description

A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.

Risk Information

Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.176

Associated Vulnerability

VulnerabilityOS Platform
(RHSA-2021:1145) nettle security update nettle-2.7.1-9.el7_9.i686.rpmLinux
(RHSA-2021:1145) nettle security update nettle-2.7.1-9.el7_9.x86_64.rpmLinux
(RHSA-2021:1145) nettle security update nettle-devel-2.7.1-9.el7_9.i686.rpmLinux
(RHSA-2021:1145) nettle security update nettle-devel-2.7.1-9.el7_9.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-3.6.14-8.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-c++-3.6.14-8.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-c++-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-dane-3.6.14-8.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-dane-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-debugsource-3.6.14-8.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-debugsource-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-devel-3.6.14-8.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-devel-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update gnutls-utils-3.6.14-8.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-3.4.1-4.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-3.4.1-4.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-debugsource-3.4.1-4.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-debugsource-3.4.1-4.el8_3.x86_64.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-devel-3.4.1-4.el8_3.i686.rpmLinux
(RHSA-2021:1206) gnutls and nettle security update nettle-devel-3.4.1-4.el8_3.x86_64.rpmLinux
low level cryptographic library (USN-4906-1) libnettle6_3.4-1ubuntu0.1_i386.debLinux
low level cryptographic library (USN-4906-1) libnettle6_3.4-1ubuntu0.1_amd64.debLinux
low level cryptographic library (USN-4906-1) libnettle6_3.2-1ubuntu0.16.04.2_i386.debLinux
low level cryptographic library (USN-4906-1) libnettle6_3.2-1ubuntu0.16.04.2_amd64.debLinux
low level cryptographic library (USN-4906-1) libnettle7_3.5.1+really3.5.1-2ubuntu0.1_i386.debLinux
low level cryptographic library (USN-4906-1) libnettle7_3.5.1+really3.5.1-2ubuntu0.1_amd64.debLinux
low level cryptographic library (USN-4906-1) libnettle8_3.6-2ubuntu0.1_i386.debLinux
low level cryptographic library (USN-4906-1) libnettle8_3.6-2ubuntu0.1_amd64.debLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libhogweed2-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libhogweed2-32bit-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libhogweed2-debuginfo-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libhogweed2-debuginfo-32bit-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libnettle-debugsource-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libnettle4-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libnettle4-32bit-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libnettle4-debuginfo-2.7.1-13.3.1.x86_64.rpmLinux
SUSE-SU-2021:1399-1(SUSE Linux Enterprise Server 12-SP5 ) libnettle4-debuginfo-32bit-2.7.1-13.3.1.x86_64.rpmLinux
(CESA-2021:1145) nettle security update nettle-2.7.1-9.el7_9.i686.rpmLinux
(CESA-2021:1145) nettle security update nettle-2.7.1-9.el7_9.x86_64.rpmLinux
(CESA-2021:1145) nettle security update nettle-devel-2.7.1-9.el7_9.i686.rpmLinux
(CESA-2021:1145) nettle security update nettle-devel-2.7.1-9.el7_9.x86_64.rpmLinux
(RHSA-2021:1145)Important: security update nettle-debuginfo-2.7.1-9.el7_9.i686.rpmLinux
(RHSA-2021:1145)Important: security update nettle-debuginfo-2.7.1-9.el7_9.x86_64.rpmLinux
nettle Security Update (ALAS-2021-1629) nettle-2.7.1-9.amzn2.i686.rpmLinux
nettle Security Update (ALAS-2021-1629) nettle-2.7.1-9.amzn2.x86_64.rpmLinux
nettle Security Update (ALAS-2021-1629) nettle-devel-2.7.1-9.amzn2.x86_64.rpmLinux
Out-of-bounds Write Vulnerability (CVE-2021-20305)NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234