CVE-2015-1789

Publication date 11 June 2015

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback.

Status

Package Ubuntu Release Status
openssl 19.04 disco
Fixed 1.0.2c-1ubuntu1
18.10 cosmic
Fixed 1.0.2c-1ubuntu1
18.04 LTS bionic
Fixed 1.0.2c-1ubuntu1
17.10 artful
Fixed 1.0.2c-1ubuntu1
17.04 zesty
Fixed 1.0.2c-1ubuntu1
16.10 yakkety
Fixed 1.0.2c-1ubuntu1
16.04 LTS xenial
Fixed 1.0.2c-1ubuntu1
15.10 wily
Fixed 1.0.2c-1ubuntu1
15.04 vivid
Fixed 1.0.1f-1ubuntu11.4
14.10 utopic
Fixed 1.0.1f-1ubuntu9.8
14.04 LTS trusty
Fixed 1.0.1f-1ubuntu2.15
12.04 LTS precise
Fixed 1.0.1-4ubuntu5.31
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
15.10 wily Not in release
15.04 vivid Ignored end of life
14.10 utopic Ignored end of life
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)

Other references