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ubuntuUbuntuUSN-4906-1
HistoryApr 13, 2021 - 12:00 a.m.

Nettle vulnerability

2021-04-1300:00:00
ubuntu.com
115
nettle vulnerability
ubuntu 20.10
ubuntu 20.04 lts
ubuntu 18.04 esm
ubuntu 16.04 esm
low level cryptographic library
signature verification
remote attacker
denial of service
invalid signatures
unix

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.6

Confidence

High

EPSS

0.01

Percentile

83.4%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • nettle - low level cryptographic library

Details

It was discovered that Nettle incorrectly handled signature verification.
A remote attacker could use this issue to cause Nettle to crash, resulting
in a denial of service, or possibly force invalid signatures.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchlibnettle8< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibhogweed6< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibhogweed6-dbgsym< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibnettle8-dbgsym< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchnettle-bin< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchnettle-bin-dbgsym< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.10noarchnettle-dev< 3.6-2ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibnettle7< 3.5.1+really3.5.1-2ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibhogweed5< 3.5.1+really3.5.1-2ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibhogweed5-dbgsym< 3.5.1+really3.5.1-2ubuntu0.1UNKNOWN
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Related

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gentoo 1
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rosalinux 1
debian 3
mageia 1
ibm 6
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redhat
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(RHSA-2021:2356) Important: nettle security update
2021-06-09 08:30:05
(RHSA-2021:1245) Important: gnutls and nettle security update
2021-04-19 11:26:49
(RHSA-2021:1246) Important: gnutls and nettle security update
2021-04-19 11:27:37
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AlmaLinux 8 : gnutls and nettle (ALSA-2021:1206)
2022-02-09 00:00:00
GLSA-202105-31 : Nettle: Denial of service
2022-01-24 00:00:00
Rocky Linux 8 : gnutls and nettle (RLSA-2021:1206)
2023-11-07 00:00:00
openvas
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Ubuntu: Security Advisory (USN-4906-1)
2021-04-14 00:00:00
CentOS: Security Advisory for nettle (CESA-2021:1145)
2021-04-17 00:00:00
Huawei EulerOS: Security Advisory for nettle (EulerOS-SA-2021-2307)
2021-08-09 00:00:00
redos
redos
ROS-2-583
2023-07-06 00:00:00
ROS-2-500
2021-09-08 00:00:00
ROS-2-847
2021-12-24 00:00:00
prion
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Design/Logic Flaw
2021-04-05 22:15:00
cvelist
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CVE-2021-20305
2021-04-05 21:31:06
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CGA-jrgv-6vmg-8276
2024-06-06 12:26:08
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2021-04-13 15:00:11
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2021-04-05 22:15:12
ubuntucve
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CVE-2021-20305
2021-04-05 00:00:00
oraclelinux
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gnutls and nettle security update
2021-04-16 00:00:00
nettle security update
2021-04-09 00:00:00
alpinelinux
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CVE-2021-20305
2021-04-05 22:15:12
fedora
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[SECURITY] Fedora 33 Update: gnutls-3.6.16-1.fc33
2021-06-01 01:06:08
f5
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K33101555 : Nettle cryptography library vulnerability CVE-2021-20305
2021-06-08 00:00:00
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2021-05-06 23:56:43
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2021-04-17 00:58:26
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2021-04-14 20:07:45
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2021-03-31 17:08:42
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Important: nettle
2021-04-20 17:55:00
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[slackware-security] gnutls
2021-05-25 18:17:19
cloudfoundry
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2021-04-29 00:00:00
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2021-06-09 00:00:00
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2021-05-31 00:00:00
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2021-04-21 00:00:00
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2021-04-21 00:00:00
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2021-04-21 00:00:00
gentoo
gentoo
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2021-05-26 00:00:00
nvd
nvd
CVE-2021-20305
2021-04-05 22:15:12
rosalinux
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Advisory ROSA-SA-2021-1930
2021-07-02 17:33:14
debian
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[SECURITY] [DLA 2760-1] nettle security update
2021-09-18 14:46:40
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2021-06-18 18:58:09
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2021-06-18 18:58:09
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2021-07-30 07:38:48
ics
ics
Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
2023-12-14 12:00:00

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.6

Confidence

High

EPSS

0.01

Percentile

83.4%

JSON
Related for USN-4906-1
redhat26nessus47openvas16redos21prion1cvelist1osv6ubuntucve1oraclelinux2alpinelinux1fedora1f51cbl_mariner1veracode1rocky1redhatcve1amazon1slackware1cloudfoundry1almalinux1cve1suse1centos1debiancve1altlinux2photon8gentoo1nvd1rosalinux1debian3mageia1ibm6ics1