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CVE-2016-6302

Publication date 16 September 2016

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

7.5 · High

Score breakdown

The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.

Status

Package Ubuntu Release Status
openssl 19.04 disco
Fixed 1.0.2g-1ubuntu9
18.10 cosmic
Fixed 1.0.2g-1ubuntu9
18.04 LTS bionic
Fixed 1.0.2g-1ubuntu9
17.10 artful
Fixed 1.0.2g-1ubuntu9
17.04 zesty
Fixed 1.0.2g-1ubuntu9
16.10 yakkety
Fixed 1.0.2g-1ubuntu9
16.04 LTS xenial
Fixed 1.0.2g-1ubuntu4.4
14.04 LTS trusty
Fixed 1.0.1f-1ubuntu2.20
12.04 LTS precise
Fixed 1.0.1-4ubuntu5.37
openssl098 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Ignored end of life

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3087-1
    • OpenSSL vulnerabilities
    • 22 September 2016

Other references