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ubuntucveUbuntu.comUB:CVE-2021-3580
HistoryJun 10, 2021 - 12:00 a.m.

CVE-2021-3580

2021-06-1000:00:00
ubuntu.com
ubuntu.com
10

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.007 Low

EPSS

Percentile

80.7%

JSON

A flaw was found in the way nettle’s RSA decryption functions handled
specially crafted ciphertext. An attacker could use this flaw to provide a
manipulated ciphertext leading to application crash and denial of service.

Bugs

Notes

Author Note
mdeslaur this fix relies on the RSA refactoring that is required to fix CVE-2018-16869, which is too intrusive to backport to older releases
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchnettle< 3.4.1-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchnettle< 3.5.1+really3.5.1-2ubuntu0.2UNKNOWN
ubuntu20.10noarchnettle< 3.6-2ubuntu0.2UNKNOWN
ubuntu21.04noarchnettle< 3.7-2.1ubuntu1.1UNKNOWN

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Ubuntu: Security Advisory (USN-4990-1)
2021-06-18 00:00:00
Fedora Update for nettle FEDORA-2018-f7d9989c42
2018-12-29 00:00:00
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2018-12-28 00:00:00
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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.007 Low

EPSS

Percentile

80.7%

JSON
Related for UB:CVE-2021-3580
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