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ubuntuUbuntuUSN-4891-1
HistoryMar 25, 2021 - 12:00 a.m.

OpenSSL vulnerability

2021-03-2500:00:00
ubuntu.com
139
ubuntu
openssl
vulnerability
denial of service
ssl
cryptographic library

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.2

Confidence

High

EPSS

0.005

Percentile

76.4%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM

Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools

Details

It was discovered that OpenSSL incorrectly handled certain renegotiation
ClientHello messages. A remote attacker could use this issue to cause
OpenSSL to crash, resulting in a denial of service.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchlibssl1.1< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchlibcrypto1.1-udeb< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchlibssl-dev< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchlibssl-doc< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchlibssl1.1-dbgsym< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchlibssl1.1-udeb< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchopenssl< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.10noarchopenssl-dbgsym< 1.1.1f-1ubuntu4.3UNKNOWN
Ubuntu20.04noarchlibssl1.1< 1.1.1f-1ubuntu2.3UNKNOWN
Ubuntu20.04noarchlibcrypto1.1-udeb< 1.1.1f-1ubuntu2.3UNKNOWN
Rows per page:
1-10 of 241

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CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.2

Confidence

High

EPSS

0.005

Percentile

76.4%

JSON
Related for USN-4891-1
ibm37openvas32redhat14cvelist1cve1alpinelinux1openssl1nvd1osv9f51nessus54suse5debiancve1debian3seebug1ubuntucve1mscve1githubexploit2rustsec1redhatcve1cloudfoundry1ics1veracode1prion1github1checkpoint_security1oraclelinux2mageia1altlinux2attackerkb2thn1archlinux1freebsd2amazon1cisco1ubuntu1fedora1almalinux1symantec1rocky1photon3freebsd_advisory1nodejsblog1gentoo1kaspersky1