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 | |
| redhat/nettle | <3.7.2 | 3.7.2 |
| IBM Security Verify Access | <=10.0.0 | |
| Nettle project Nettle | <3.7.2 | |
| Fedora | =33 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| NetApp ONTAP Select Deploy | ||
| Debian | =9.0 | |
| Debian | =10.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
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
- 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
- collector/ibm-support
- source/IBM
- agent/trending
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- package-manager/redhat
- vendor/ibm
- canonical/ibm security verify access
- version/ibm security verify access/10.0.0
- vendor/nettle project
- canonical/nettle project nettle
- vendor/fedoraproject
- canonical/fedora
- version/fedora/33
- vendor/redhat
- canonical/red hat enterprise linux
- version/red hat enterprise linux/7.0
- version/red hat enterprise linux/8.0
- vendor/netapp
- canonical/netapp active iq unified manager for vmware vsphere
- canonical/netapp ontap select deploy
- vendor/debian
- canonical/debian
- version/debian/9.0
- version/debian/10.0