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ubuntuUbuntuUSN-4397-1
HistoryJun 16, 2020 - 12:00 a.m.

NSS vulnerabilities

2020-06-1600:00:00
ubuntu.com
56

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.3 High

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

59.9%

Releases

  • Ubuntu 20.04 LTS
  • Ubuntu 19.10
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • nss - Network Security Service library

Details

It was discovered that NSS incorrectly handled the TLS State Machine. A
remote attacker could possibly use this issue to cause NSS to hang,
resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS
and Ubuntu 19.10. (CVE-2019-17023)

Cesar Pereida Garcia discovered that NSS incorrectly handled DSA key
generation. A local attacker could possibly use this issue to perform a
timing attack and recover DSA keys. (CVE-2020-12399)

OSVersionArchitecturePackageVersionFilename
Ubuntu20.04noarchlibnss3< 2:3.49.1-1ubuntu1.1UNKNOWN
Ubuntu20.04noarchlibnss3-dbgsym< 2:3.49.1-1ubuntu1.1UNKNOWN
Ubuntu20.04noarchlibnss3-dev< 2:3.49.1-1ubuntu1.1UNKNOWN
Ubuntu20.04noarchlibnss3-tools< 2:3.49.1-1ubuntu1.1UNKNOWN
Ubuntu20.04noarchlibnss3-tools-dbgsym< 2:3.49.1-1ubuntu1.1UNKNOWN
Ubuntu19.10noarchlibnss3< 2:3.45-1ubuntu2.3UNKNOWN
Ubuntu19.10noarchlibnss3-dbgsym< 2:3.45-1ubuntu2.3UNKNOWN
Ubuntu19.10noarchlibnss3-dev< 2:3.45-1ubuntu2.3UNKNOWN
Ubuntu19.10noarchlibnss3-tools< 2:3.45-1ubuntu2.3UNKNOWN
Ubuntu19.10noarchlibnss3-tools-dbgsym< 2:3.45-1ubuntu2.3UNKNOWN
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1-10 of 221

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.3 High

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

59.9%