CVE-2021-20305
First published: Wed Mar 24 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/nettle | 3.4.1-1+deb10u1 3.7.3-1 3.8.1-2 3.9.1-2 | |
| Nettle Project Nettle | <3.7.2 | |
| Fedoraproject Fedora | =33 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| NetApp ONTAP Select Deploy administration utility | ||
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| redhat/nettle | <3.7.2 | 3.7.2 |
| IBM Cloud Pak for Security (CP4S) | <=1.5.0.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.5.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.6.0.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.6.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 |
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Reference Links
- https://lists.lysator.liu.se/pipermail/nettle-bugs/2021/009457.html
- https://git.lysator.liu.se/nettle/nettle/-/commit/a63893791280d441c713293491da97c79c0950fe
- https://git.lysator.liu.se/nettle/nettle/-/commit/971bed6ab4b27014eb23085e8176917e1a096fd5
- https://git.lysator.liu.se/nettle/nettle/-/commit/74ee0e82b6891e090f20723750faeb19064e31b2
- https://git.lysator.liu.se/nettle/nettle/-/commit/51f643eee00e2caa65c8a2f5857f49acdf3ef1ce
- https://git.lysator.liu.se/nettle/nettle/-/commit/401c8d53d8a8cf1e79980e62bda3f946f8e07c14
- https://git.lysator.liu.se/nettle/nettle/-/commit/ae3801a0e5cce276c270973214385c86048d5f7b
- https://git.lysator.liu.se/nettle/nettle/-/commit/63f222c60b03470c0005aa9bc4296fbf585f68b9
- https://security-tracker.debian.org/tracker/CVE-2021-20305
- https://bugzilla.redhat.com/show_bug.cgi?id=1942533
- https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/
- https://security.gentoo.org/glsa/202105-31
- https://security.netapp.com/advisory/ntap-20211022-0002/
- https://www.debian.org/security/2021/dsa-4933
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1942535
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1942921
- https://access.redhat.com/errata/RHSA-2021:1145
- https://access.redhat.com/security/cve/cve-2021-20305
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1948707
- https://access.redhat.com/errata/RHSA-2021:1206
- https://access.redhat.com/errata/RHSA-2021:1245
- https://access.redhat.com/errata/RHSA-2021:1246
- https://access.redhat.com/errata/RHSA-2021:2280
- https://access.redhat.com/errata/RHSA-2021:2356
- https://access.redhat.com/errata/RHSA-2021:2758
- https://access.redhat.com/errata/RHSA-2021:2760
- https://exchange.xforce.ibmcloud.com/vulnerabilities/199653
- https://www.ibm.com/support/pages/node/6476940
- collector/security-tracker-debian
- agent/weakness
- agent/type
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/author
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/description
- agent/event
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-20305
- agent/software-canonical-lookup
- agent/references
- agent/tags
- agent/softwarecombine
- collector/ibm-support
- source/IBM
- package-manager/debian
- vendor/nettle project
- canonical/nettle project nettle
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- vendor/redhat
- canonical/redhat enterprise linux
- version/redhat enterprise linux/7.0
- version/redhat enterprise linux/8.0
- vendor/netapp
- canonical/netapp active iq unified manager vmware vsphere
- canonical/netapp ontap select deploy administration utility
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- package-manager/redhat
- vendor/ibm
- canonical/ibm security verify access
- version/ibm security verify access/10.0.0